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  1. Back Up Alarm
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  4. 97 Decibels
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Surface Mount Back-up Alarm - 97 DB

Surface Mount Back-up Alarm - 97 DB

Item # BK97DB
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BK97DB - 97 Decibels Custer Back Up Alarm
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Custer Back Up Alarm - BK97DB

  • Surface Mount
  • 97 Decibels
  • Low Volume
  • Custer


Features:

  • Surface mount alarm
  • 97 Decibels

BK97DB Custer Surface Mount Back Up Alarm

Replaces BKUP-97





Video of Surface Mount Back-up Alarm - 97 DB

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Custer Surface Mount Back-up Alarm Review and Installation

What's going on, everybody Adam here with etrailer. Today we're going to be taking a look at the Custer surface mounted backup alarm. So this is going to give us about 97 decibels of sound. So we're going to go ahead and turn it on for you to see exactly how loud it is. It's pretty loud. It really is a small, nice and tight unit.

So it's not really very bulky at all. So let's go over some measurements. One, the mounting holes are going to be three and a quarter inches on center. And then we're going to have an overall length of about four inches. It's going to come down about three inches, and it's going to be about an inch and three quarters thick.

It does come with just the alarm. So we are going to have to grab some wires and stuff like that. A lot of people are wondering if it's going to be able to adjust sound. So we have some that will, but this one will not. It's always going to be pushing out that 97 decibels whenever you hook it up.

One thing that you will need to get are some terminals like this. We have them here at each trailer and also the wires as well. So if you're wondering if it's going to work with your vehicle, all you have to do is just find the power wire that goes to your reverse lights, tie it into that, and then ground it. And you are good to go. So if you stick around, we're going to show you exactly how we got the scene mounted and how we wired it up.

First step is finding the reverse light wire. So the way to do that is to have somebody go into the cab, and then what we're going to do is we're going to take our tester and then just check for the wire that has the reverse circuit on. So Brad, you put it in reverse real quick. All right. So that is good. So we know that is the circuit that we want. We already ran this wire. So basically what you can do is you can take the wire that runs to your reverse lights. You can cut it in half, and then you can take another wire and twist that together with one side, put it in here, clamp it down, and then take the other to complete the circuit again. So you have two coming off this way. One goes to here, the other one goes to where it was before. And then the other ones is coming from the body harness. So that's what we did. And you can have it right here. So now we can go ahead and start mounting it up. So first we want to figure out exactly where you want to put it. I'm going to put it right here, just because that is where all of our wiring goes for our signal wire. So, you go ahead and take it. And I already have these holes pre drilled, and you are going to have to supply our own hardware. So I'm just using a self-tapper, just like this. And of course, the tool to put it in. So we want to go ahead put that up. We want it to be nice and tight, but not too tight. We don't want to crack that housing. It is pretty tough plastic, but just be mindful of it. You go ahead and put the other one in. Now that it's mounted, we can start working on our wires. So once you find your signal wire for the reverse lights, you're going to need to grab some extra wire. We have some here at etrailer for you. So add that to your cart and then add a little terminal like this. Also have that, slide that in and then tighten it down. I like to get it threaded on by hand first. Get it pretty tight. And then you can come in with an eight mill socket. I don't want to over tighten this. I'm going to tighten it by hand and then just do one little turn with the tool. And that is pretty tight. So now we can go ahead and move on to our ground wire on this side. And then we just put together a little wire. If you do grab wire from us, you can just use that same wire. You probably have some leftover. It doesn't need to be that long for our situation. But what we can do is we can take one off, do the same exact thing as we did before. This goes on like that. Nice and tight. Perfect. We already had a hole drilled over here, so I'm just going to use that for ground. And again, just use a self-tapper and a little washer. Get that up and in there, and then zip it down with the tool. Simple as that. Now you go ahead and grab a buddy, have them get in. Brad's gonna go ahead and put it in reverse just to make sure that it works. And it works. Now let's see what it sounds like back here, right next to it. BradA lot louder back here, but still plenty loud up there in the cab. We have a lot of different backup alarms here at etrailer, besides the one we just showed you. So we laid them all out. And we're going to do a sound test here. So we have all of them laid out. And over here, we're going to have a little gauge. So as you can see, once I start talking real loud, it goes up. And when I stop, it goes back down. So this is going to give us an idea of exactly how accurate the decibel ratings are, and see which one's the loudest. First one up on our list is going to be the Buyers Products back up alarm. And this one is supposed to do 102 decibels. So, they got some wires ran and we're rigging this up so we can get it to work on the table here. So I'm going to go ahead and put the wires in place, just like that. Let's see exactly how loud it actually is. All right, here goes the test. So about 96, 97 decibels and it is a little far away. So right here, it's probably going to be around that 102 decibel mark, which is exactly what it says. So let's move on to the next. This one's going to be a little bit louder, 107 apparently. Again, Buyers Products. And we're going to connect it up. All right, test number two. So we're peaking out about 95, which is kind of the same as the other one. It does have a little bit different tone, so that might have something to do with it. And also we do have it a little farther away. But it is still within that range in the same ballpark. And that's what we're kind of looking for here. So moving on, we're going to go with the Pollack back-up alarm. So this one is going to be about 107 decibels. So let's test it out and see if that's what it is. Testing. Again, kind of going around that 95 decibel range. But again, it's just an app on one of our iPads we keep hearing the shop, but it still is pretty loud, but all in all, it's around the same or we're looking at maybe about eight decibels of difference from what it says and what our gage is telling us. Now for the Custer backup alarm. Let's go ahead and hook it up. Testing. So not as loud as some of the others that we had. About 83 is what we're getting with that. And this one's supposed to be 97. So it's within the range. And now for our Peterson backup alarms, going to be about 112 decibels. So it should be a little bit louder than the others. It's reading about 95, but that was a lot louder. I think it's because of the little projection that they have in the molding, but this one definitely seems louder, even though it is reading about the same from all the others, but let's move on. So now we're going to go with the Pollack. And this one's going to have different settings. So at its highest setting, it's supposed to be around 112. So let's see if it's any louder than this one. Testing. Again about 97, but this one definitely is a lot louder. So I think usually when the housing's a little bit bigger kind of projects that sound a little bit more, it makes it a little bit louder. Out of all the ones we tested today, the one I would go with is the Pollak. So this one is my favorite just because we are going to have adjustments on the side for the decibel output. I ended on the 112, but we can make it go to 97 or 107. So this is going to be adjustable and it's extremely heavy duty. It does feel a lot more solid than some of the smaller ones. And typically these are going to go on larger vehicles. So it being compact isn't really a big deal for me. And if you do want a smaller one, the Buyers Product is going to be a nice, compact little unit. And this is going to be a little bit easier to find a place to put it. And that'll do it for our look at the Custer backup alarm..


Customer Reviews

Surface Mount Back-up Alarm - 97 DB - BK97DB

Average Customer Rating:  4.8 out of 5 stars   (9 Customer Reviews)


- BK97DB
by:

Was an easy installation and it works fine. Thank you.


Comments
Great, works great and not overly loud. I highly recommend the product. Quick install and I have not had any issues.
Danny - 05/19/2022


- BK97DB
by:

Product worked as described. It did not come with any instructuins but the online videos from etrailer.com were fairky helpful. The only thing that was not clear was the size wire to use. I ended uo using 14 guage wire after some online research but it would have been nice if the product came with a few quick directions. Other than that, the speaker is very clear and works as designed.



- BK97DB
by:

Bought I think 12 of these for our fleet of work vehicles. Great Price, Easy to install and work great.



- BK97DB
by:

Everything was excellent, you sell great products. Will always look to you first for anything trailer related. Thanks



- BK97DB
by:

This works like a charm. It not overly loud, but enough for the folks at Krogers to know I'm backing up. Glad that I found this, only took approx. 30 mins to install. Great company, fast delivery.



- BK97DB
by:

Fast shipping, 5 minute prep time, approx 20 minute install, pretty simple, works great .



- BK97DB
by:

Easy to install and performs great



- BK97DB
by:



- BK97DB
by:

very good and easy to install


9
9

Ask the Experts about this Custer Back Up Alarm

  • How to Find Reverse Light Circuit for Wiring Up Back Up Alarm on Vehicle
    You'd have to track the wiring that leads to the reverse lights of the 2015 Toyota Highlander and then test all of them with a circuit tester like part # PTW2993 until you find the circuit that only carries voltage when the reverse lights are on. That would be the correct circuit to use.
    view full answer...
  • Surface Mount Backup Alert Recommendation for a 2010 Honda Odyssey
    At this time we do not carry a reverse light backup alert for your 2010 Honda Odyssey LX. I spoke with my contact at Hopkins and they do not have anything for the 7440 series bulb that is in your vehicle. You still have an option for an audible back-up alarm. You could use a Surface Mount Back-up Alarm # BK97DB. You will need to hardwire this unit into your reverse light circuit to install this product, but it would work as a back up alarm.
    view full answer...
  • Fit of Hopkins Backup Alert Reverse Lamp Bulb Part # HM20101VA on 2009 Chevy Colorado
    According to the owners manual, reverse lamp bulb in a 2009 Colorado is a # 3057. The Hopkins Back-Up Alert Bulb is only offered in # 1156 or # 3156, neither of which, I am sorry to say, will work on your vehicle. I would recommend going with the Surface Mount Back-Up Alarm, part # BK97DB. This unit could be mounted under the vehicle behind the bumper and is easily installed by tapping into the reverse lamp circuit.
    view full answer...
  • How Would a Custer Back-Up Alarm Install on a Reverse Light Circuit of a Vehicle with a 7-Way
    What you could do to install this Surface Mount Back-up Alarm # BK97DB is install it inline with the purple wire of your 7-way. You would cut the purple wire and then attach one end of the wire to one of the contact studs and then attach the other wire to the other stud, and then when there is voltage on this circuit the voltage will run through the # BK97DB activating the alarm and then go to the 7-way. I attached an FAQ article on trailer wiring for you to check out also.
    view full answer...
  • Back-up Alert Recommendation for a 2004 Toyota 4Runner
    In terms of a Hopkins Backup Alert with a light that plugs into the tail light socket, we only have # HM20100VA and # HM20101VA which cover the two most common sizes (1156 and 3156). What I recommend for you on your 2004 Toyota 4Runner is the Custer Surface Mount Back-up Alarm, # BK97DB. This unit can be mounted in an out of the way place at the back of the vehicle. It will connect to a reverse light circuit behind one of the vehicle tail lights and will pump out 97 decibels of sound when...
    view full answer...
  • Options for Backup Alert System that is Louder than the Hopkins Replacement Bulb with Audible Alert
    If you are looking for a product that produces an alarm at a higher volume when backing up, then I would recommend the Custer Surface Mount Back-up Alarm, part # BK97DB. This unit mounts directly to the exterior of your vehicle and produces audible levels of 97db which should be what you are looking for. The Custer Back-up Alarm has a slight advantage because it is not mounted in the taillight compartment where the volume can be slightly hindered. This unit receives power from the reverse...
    view full answer...
  • Back-Up Alert Solution for 2011 Jeep Compass
    Hopkins offers the back-up alert bulbs that will replace the 1156 or the 3156 bulb, but not the 7440. We do however have a solution, the Custer Back-Up Alarm, part # BK97DB. The back-up alarm would get power directly from the reverse light circuit of your Compass, and would automatically actuate when the vehicle transmission is placed in reverse.
    view full answer...
  • Backup Alert for a 2014 Ram 1500
    I believe your 2014 Ram takes a 3157 reverse light bulb. A 3156 style which is what # HM20101VA is will fit the same socket but it will not work properly. But there is another option. You can use Surface Mount Back-Up Alarm, part # BK97DB. This unit could be mounted under the vehicle behind the bumper and is easily installed by tapping into the reverse lamp circuit.
    view full answer...
  • Backup Alert for a 2010 Freightliner Sprinter 2500
    I did a little research and your 2010 Frieghtliner Sprinter 2500 uses a 7506 reverse light bulb. We do not have a bulb replacement with backup alert for the 7506 bulb but I do have a solution for you. Take a look at Surface Mount Back-up Alarm # BK97DB. You can mount this guy under the vehicle and wire it into a reverse light circuit. It will be louder at 97 decibels and more effective compared to the replacement bulb type. I have included a link to a video showing an installation for you.
    view full answer...
  • Backup Alert for a 2006 Chevy Silverado 2500
    Your 2006 Chevy Silverado uses a 3157 reverse light bulb. The Hopkins backup alert fits a 3157. It would fit into the same slot but would not function correctly. But not to worry because there is another option. You can use backup alarm # BK97DB. It wires into a reverse light wire and will be louder at 97 decibels compared to the Hopkins alert. I linked a video showing an installation for you.
    view full answer...
  • Will Hopkins Backup Alert # HM20101VA Fit 2008 Saturn Astra
    Your 2008 Saturn Astra uses a type 921 backup light bulb so the Hopkins Backup Alert, # HM20101VA, that was designed to replace a 3156 bulb will not work for you but I do have a solution. Check out the Custer Surface Mount Back-Up Alarm, # BK97DB, which provides a 97 decibel alarm when activated. This alarm can mount to the underside of the bumper and will wire into the reverse light circuit of your Astra.
    view full answer...
  • Back Up Alert Recommendation for a 2011 Honda CR-V
    For a reverse alert for your 2011 CR-V you would have to hardwire one in since the bulb style of your reverse lights is the 7440 and we only have reverse light alerts in the 3156 and 1156 variety. What I recommend is the surface mount alarm, # BK97DB. At 97 decibels, this alert can definitely be heard at the rear of the vehicle. Installation is simple; the alert can mount to a flat surface at the back of the vehicle. You can even mount it out of sight. Wire the unit into the reverse light...
    view full answer...
  • Backup Alert Recommendation for a 2011 Chevy Impala
    From what I found, the 2011 Chevy Impala uses 921 reverse light bulbs so the Hopkins Backup Alert # HM20100VA will not fit. I recommend the surface mount alarm, # BK97DB. You can mount this under the vehicle on the frame, wire it up to the reverse light circuit on the vehicle, and it should work well for you.
    view full answer...
  • Recommended Back Up Alarms for Fleet of 1999-2012 Ford E350 Vans and F350 Pickups
    According to Hopkins, the # HM20101VA Backup Alert Replacement 3156 Bulb will work with 1999-2011 Ford Vans. The same bulb will work for a 1999-2009 Ford F350. For the 2012 E350 Van and the 2010-2012 F350, I would recommend the Surface Mount Back-Up Alarm, part # BK97DB. This item can be mounted behind the rear bumper of a vehicle, with one terminal connected to the reverse lamp circuit and the other grounded to the vehicle frame. If you wanted one item that would work for your entire...
    view full answer...
  • Backup Alert Recommendation for a 2012 Dodge Ram 3500
    From what I have found, the 2012 Dodge Rams take a 921 bulb for reverse lights. Neither of the backup alerts that fit in place of the regular lights will fit. What I recommend is a under the truck or behind the bumper mount unit like # BK97DB. This unit wires into the reverse light circuit and will send a 97 decibel alert when the truck is placed in reverse.
    view full answer...
  • Back Up Alert Recommendation for a 2010 Suzuki Equator with a # 921 Reverse Lamp Bulb
    The Hopkins Backup Alert, # HM20101VA, is designed to replace a # 3156 bulb and will not replace the # 921 bulb on your 2010 Suzuki Equator. Instead, I would recommend looking at the Custer Surface Mount Back-Up Alarm, # BK97DB. This alarm can mount to any surface such the frame or bumper and wires into the reverse light circuit on your truck. Once it is wired in it will send a 97 decibel alert when the truck is placed in reverse.
    view full answer...
  • Back Up Alert Recommendation for a 2013 Subaru Outback Wagon
    I do have a back up alert that you can use but the Hopkins Backup Alert, # HM20101VA, is designed to replace a 3156 bulb and will not replace the 921 bulb on your 2013 Subaru Outback Wagon. Instead, I recommend the Custer Surface Mount Back-Up Alarm, # BK97DB. This alarm can mount on the frame and wires into the reverse light circuit on the vehicle. Once it is wired in it will send a 97 decibel alert when the vehicle is placed in reverse.
    view full answer...
  • Backup Alert Recommendation for a 2008 Kia Sportage
    The 2008 Kia Sportage uses 921 reverse light bulbs. I do have an option for a backup alert but one that fits as a replacement in the bulb socket is not available for the Sportage. Instead, you can use # BK97DB. This is a surface mount unit that wires into a reverse light wire. You can mount it underneath the vehicle on the frame or any flat surface that is convenient for you.
    view full answer...
  • Backup Alert and Fog Lights for a 2008 Ford F-250 Crew Cab
    On your 2008 Ford F-250, by any chance are there more than 1 places where reverse lights light up? That could account for different bulb types being listed. You are correct though a 3156 will not fit in place of a 921. While there is no 921 backup light/alarm I do have an alternative solution for you. You could install # BK97DB under the rear of the truck. It taps into a reverse light circuit and when the truck is in reverse will put out a 97 decibel alert. For fog lights I show that...
    view full answer...
  • Backup Alerts for a 2012 Ford F-150 and 2005 Toyota Tacoma
    The 2012 Ford F-150 most likely uses a 921 reverse light bulb. The 2005 Toyota Tacoma uses the same bulb. A back up alert that fits into the light socket is not available in this bulb size. But I do have something that you can use on either vehicle. You can use the surface mount back up alarm, # BK97DB. It attaches under the vehicle and will wire into the reverse light circuit.
    view full answer...
  • Backup Alarm Recommendation for a 2012 Ford F-150
    From what I have found the 2012 Ford F-150 uses a 921 reverse light bulb. Neither of the backup alarms we offer that replace the reverse light bulbs will fit. But I do have an excellent solution for you. You can use backup alarm # BK97DB. This alarm wires into a reverse light wire and you can mount it beneath the vehicle. It is loud at 97 decibels and will work well for you.
    view full answer...
  • Back Up Alarm for a 2011 Ford F-250 Super Duty
    It looks like the reverse light bulb type on a 2011 Ford F-250 is a 921 or 7440. We do not have a back up alarm that fits this socket type. But not to worry because you can still use surface mount back up alarm # BK97DB. Mount this alarm under the truck and wire it into a revere light circuit. At 97 decibels it will be louder than the type that fits in place of a reverse light bulb.
    view full answer...
  • Backup Alarm Recommendation for a 2009 Ford Flex SEL
    From what I could find your 2009 Ford Flex uses a 921 reverse light bulb. We only have backup alert replacement bulbs for 1156 and 3156 bulbs so neither would fit your Flex. but we do have a solution that you can use. You can use the Custer Surface Mount Back-up Alarm, # BK97DB. It mounts outside of the vehicle and receives power from the reverse light circuit on the vehicle. It will actually be louder than the bulb type alarms.
    view full answer...
  • Back Up Alert Recommendation for a 2014 Chevy Silverado 1500
    Your 2014 Chevrolet Silverado 1500 uses a type 921 backup light bulb. The Hopkins product you reviewed, part # HM20101VA, is a replacement for the type 3156 bulb. My contact at Hopkins advises that they do not offer an audible alarm replacement bulb for the 921 type. I also checked with two other suppliers of aftermarket lighting products, Putco and Optronics, and neither of these suppliers offers a 921 replacement bulb with alarm. However, we do offer the Custer Surface Mount Back-up...
    view full answer...


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Info for this part was:

Employee Michael H
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Michael H
Employee Jameson C
Expert Research:
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Employee Joshua S
Video by:
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Employee Chris R
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Employee Nicholas E
Test Fit:
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Employee Jacob T
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Employee Dustin K
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Employee Adam E
Installed by:
Adam E

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