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Mounting Bracket for Optronics 90 Series or 91 Series Trailer Lights - Self-Grounding - Black

Mounting Bracket for Optronics 90 Series or 91 Series Trailer Lights - Self-Grounding - Black

Item # A91BB
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Optronics Accessories and Parts - A91BB
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Black plastic bracket lets you install an Optronics A91 Series, AL90 Series, AL91 Series, or AL191 Series trailer light. Surface mount on 2" centers. Light grounds through mounting hardware (sold separately). Call 800-298-1624 to order Optronics accessories and parts part number A91BB or order online at etrailer.com. Free expert support on all Optronics products. Guaranteed Lowest Price and Fastest Shipping for Mounting Bracket for Optronics 90 Series or 91 Series Trailer Lights - Self-Grounding - Black. Accessories and Parts reviews from real customers.
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Optronics Accessories and Parts - A91BB

  • Trailer Lights
  • Mount Parts
  • Mounting Brackets
  • Optronics
  • Black

Black plastic bracket lets you install an Optronics A91 Series, AL90 Series, AL91 Series, or AL191 Series trailer light. Surface mount on 2" centers. Light grounds through mounting hardware (sold separately).


Features:

  • Mounting bracket for Optronics A91 Series, AL90 Series, AL91 Series, or AL191 Series trailer clearance/side marker lights
  • Gasket creates a weathertight seal
  • Self-grounding, surface-mount design
    • Light grounds through mounting hardware (sold separately)
  • Single-wire harness (A91LW) for light sold separately
  • Black molded plastic construction


Specs:

  • Dimensions: 2-7/8" long x 1-1/2" wide x 1/2" deep
  • Mounting hole dimensions (center to center): 2"
  • 3-Year warranty


dimensions of self-grounding base

Bracket is a direct replacement for:

  • Uni Bond BM1020BC
  • Wesbar 106289
  • Truck Lite 15408


A91BB Optronics Black Plastic Base for A91, AL90, AL91, or AL191 Series Trailer Clearance/Side Marker Light

Alternate part number: A-91BB




California residents: click here



Customer Reviews

Mounting Bracket for Optronics 90 Series or 91 Series Trailer Lights - Self-Grounding - Black - A91BB

Average Customer Rating:  4.8 out of 5 stars   (69 Customer Reviews)

Black plastic bracket lets you install an Optronics A91 Series, AL90 Series, AL91 Series, or AL191 Series trailer light. Surface mount on 2" centers. Light grounds through mounting hardware (sold separately).

- A91BB
by:

This is my third order from Etrailer……quick response to my questions, video descriptions of the products, fast shipping, got exactly what I ordered…..I wish all companies would take pride in their businesses like Etrailer does! Thank you, Brad



- A91BB
by:

Bought the Optronics Sealed Trailer Light, UL95CB, as a replacement for my boat trailer's backup light and paired it with a Optronics Mounting Bracket, A91BB. The combo was a perfect replacement and fit. Installation was easy with stainless steel rivets. Etrailer.com had the best price BY FAR and the products were received prior to the estimated delivery date.



- A91BB
by:

It worked well for my application



- A91BB
by:

I had to replace the two side marker lights on the tongue of my trailer. The originals were the same dimension as the tongue and if I had to step on the tongue to operate the winch my foot would either knock off the lenses or break them! The AL91AB lights were the answer being very slim, I could mount them below the top edge of the trailer tongue. Somewhere I read a review that implied if you had to remove one of the lights from these brackets, it was almost impossible. I did not find that to be true at all. Gently prying on one end with a medium flat screwdriver eased the light out with no problem. These brackets hold the lights securely and look great!



- A91BB
by:

Solid product. I liked the grounding feature. Hardware required for installation, but I preferred SS for a marine environment. Be aware that the low profile does not allow the straight plug clearance on installation. Required a larger hole (3 total; 2 mounting and for the plug) in the trailer for clearance. Allow for this when measuring for mounting location and placement.



- A91BB
by:

I recently purchased red reflective lights for my boat trailer. Price, service and fast delivery time are outstanding. There is no need to waste time, money and energy trying to find items locally. Just let your fingers do the walking on-line to buy quality products at a reasonable price. Carl Milligan - Kinston, NC



- A91BB
by:

Got what I needed. Thank you



- A91BB
by:

I received the lights I ordered for my boat trailer. They were exactly what I needed. They were shipped promptly and were packaged safely & securely. I appreciate the quick turnaround!



- A91BB
by:

The lights and brackets arrived nicely-packed, and worked on my boat trailer as intended as intended. Check the original mounting holes. The mounting holes for the new light bar were located in different positions, than the damaged light bar I replaced, so a drill and bits, and zinc spray paint might be necessary. I also used stainless steel screws, instead of the supplied screws.



- A91BB
by:

Had to do a little adjusting on one of the mounting hole to get this to fit, but was minor. worked great



- A91BB
by:

Excellent products and service. Etrailer is my go-to for trailer parts.



- A91BB
by:

I managed to smash a trailer clearance light on practically my maiden trip with a new boat and trailer. After thinking I could find one around somewhere (but never did), I went searching on the web. I found the exact items (light and mounting bracket) here, making replacement a snap.



- A91BB
by:

fit like a glove.



- A91BB
by:

Just what I needed.



- A91BB
by:

I like shopping at etrailer for the vast variety of parts offered. I looked on Amazon first but they just didn't have the everything I needed in one place. etrailer did! Transaction was easy, shipping was fast, parts work as advertised, and prices are fair. What more can you ask for!! This particular part was an exact fit on my trailer. Works great, nice and bright! A big upgrade from the part I had in there previously.



- A91BB
by:

I've ordered everything from wheels and tires, to lights for my trailer. Customer service is always quick to answer any questions, or to help you get the right items for your needs. Prices are always great as well.



- A91BB
by:

Loved it, the website was great....very detailed! All the parts I ordered were exactly what I was looking for, just wish you sold boat parts as well.



- A91BB
by:

Perfect replacement for my damaged mounting bracket. Great service and fast delivery.


Comments
Everything is working great still. I have not had any issues with any of the products purchased from etrailer.com. Customer service has been outstanding as well as the pricing for the specific products needed. Etrailer.com is my first choice for products as these when the need arises. Thanks
Mike - 04/21/2016



- A91BB
by:

Have all the parts with a great selection and price of trailer parts. Fast shipping with great communication.



- A91BB
by:

I did have to drill new holes for the mounting bracket, but after that the installation was easy. Inserting the sealed LED clearance light was a bit of a tight squeeze, but I guess a snug fit is needed. I would recommend the bracket and LED light to anyone.



- A91BB
by:

Dear etrailer, It has been a pleasure dealing with both Lisa and your company. I got a fantastic deal plus free shipping. You are my go to guys for trailer supplies. Thanks



- A91BB
by:

The trailer lights have been excellent.



- A91BB
by:

I replaced two of my existing AL91 series marker lights after a blowout wiped out the fender and both lights. These lights work great and since they are sealed, they work even though submersed in fresh water numerous times. Wouldn't hesitate to buy them again should I have another blow out. God forbid!



- A91BB
by:

Mounting bracket keeps the light assembly secure on my trailer fendets. Nice value and nice price.



- A91BB
by:

I purchased these to use with the micro flex LED marker lights. Worked great and were quick replacements of the previous chrome brackets.


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Ask the Experts about this Optronics Accessories and Parts

  • What Size Hardware Should be Used to Mount Mounting Bracket for A91 and AL91 Series Lights # A91BB
    I went out to the warehouse and pulled Black Mounting Bracket for A91 and AL91 Series Lights # A91BB and found that the largest screw size you could use is a 3/16 inch. The hole diameter is actually approximately 0.19 inches which is slightly larger than 3/16. Given the coverall depth and the depth from the inside mounting surface, a 1/2 inch long screw at least would be ideal.
    view full answer...
  • How to Mounting the Mounting Bracket for A91 and AL91 Series Trailer Lights
    I would recommend using stainless steel sheet metal screws for mounting the Mounting Bracket for A91 and AL91 Series Trailer Clearance, Side Marker Lights, since the connection to the trailer needs to make a good ground connection.
    view full answer...
  • Black Mounting Bracket for A91 Series Trailer Clearance Lights # A91BB Recommendation
    The Sealed, Mini Rectangular Trailer Clearance and Side Marker Light, part # A91RB, that you have are self grounding. You would need a Black Mounting Bracket for A91 and AL91 Series Trailer Clearance, Side Marker Lights -Self Grounding, part # A91BB, for them to ground and function correctly. Your other option would be to run a ground wire and power wire to the two terminals of the # A91RB. However, it would probably be easier to just get the # A91BB.
    view full answer...
  • Grommet Recommendation for the LED Waterproof Grommet Mount Clearance Side Marker Light # 47-203667
    The recommended grommet for the # 47-203667 and # 47-203668 that you referenced is the part # 221588. Without knowing exactly what you have on your trailer it's hard to say why the lights you have won't fit it. Unless you can come up with a way to modify the grommet you have now the only recommendation I can make would be the part # 221588.
    view full answer...
  • Does Optronics Mounting Bracket A91BB Ground Through Bracket
    The bracket you ordered part # A91BB is self-grounding as the mounting hardware will connect to the metal surface of the trailer. If this is a plastic fender application you'll need to run a wire to the mounting hardware.
    view full answer...
  • Bolt Hole to Bolt Hole Dimension for the Black Mounting Bracket # A91BB
    The center to center dimension of the Black Mounting Bracket # A91BB mounting holes is 2 inches.
    view full answer...
  • Troubleshooting Running Light Circuit Fuse Blowing on Trailer when Plugged In
    There is a short somewhere on the marker light circuit of your trailer. You will need to go over the wiring of the circuit looking for any cut or exposed wire and fix as necessary. That is why the fuse keeps blowing. I attached a couple help articles that you should find helpful as well.
    view full answer...
  • Will LED Clearance Light Work With One Wire
    Yes, the Thinline LED Clearance and Side Marker Light - Submersible # AL91AB will work with your single power wire, as it uses a 2-wire (one for power, one for ground) pigtail or 1-wire pigtail with a self-grounding bracket. To mount this light you have a couple options. The first is the Mounting Bracket # A91BOB with Right Angle 2-Wire Pigtail # A46PB; you'd also want to use the Self-Tapping Screw # 1131832. Your other option to mount this light is to use Self-Grounding Mounting...
    view full answer...
    Image 1 for
  • Replacement LED Taillight Recommendation for 2002 Shoreland'r Profile 2000 Boat Trailer
    We do indeed have some LED taillights that'd work great on your boat trailer. I'd recommend # STL57RB for the driver side and # STL56RB for the passenger side. These lamps measure 6-1/16 x 2-5/8 inches, and would work well on your trailer. As you can see in the photo provided by one of our customers, the taillight works well on a Shoreland'r trailer. As long as they're still working okay, you certainly may leave the existing fender running lights in place. If you decide you want to...
    view full answer...
    Image 1 for
  • How to Wire up the Thinline LED Clearance and Side Marker Light to Single Wire Trailer
    To use the # AL91RB on a trailer that has one wire for the power wire and then grounds through the mounting bracket would only require the bracket part # A91BB for the bracket and then part # A91LW for a single wire connector.
    view full answer...
  • Replacement Amber Clearance Light for a Peterson PM 150
    Sealed lights would have to be replaced since there is not easy way to get them open and maintain functionality of the light. Your light looks similar to # A91AB. This light measures 2-1/2 inches across, 1-3/16 inches tall and 7/8 inches deep. It mounts in base # A91BB and can use harness # A91LW.
    view full answer...
    Image 1 for
  • Replacement Boat Trailer Clearance Light with SAE P2 91 DOT on the Lens
    The number on the lens that you see is the lens rating, not a part number so it is difficult to go by that number. There might be a part number on the back of the light housing. Otherwise it would be easiest to go by the dimensions of the light. For example light # A91RB does have the same lens rating. It would use a base such as # A91BB and wiring harness # A91LW for the power wire.
    view full answer...
  • Replacement Amber Mini Trailer Clearance Light For Wesbar 3395
    We have just what you are looking for. The replacement clearance light we offer is the Optronics Mini Rectangular Clearance Light, part # A91AB. This is an amber light that measures 2-1/2 inches long x 1-3/16 inches wide x 7/8 inch deep. This light requires the # A91LW pigtail to complete the wiring and a mounting bracket. The bracket is available in black, part # A91BB. For a chrome finish, use # A91CB.
    view full answer...
  • Looking for Boat Trailer Clearance Light to Replace Signal Stat 1500
    According to my Optronics representative, the # AL91RB marker/clearance light you mentioned is a direct replacement for the Truck-Lite 15 series. The Signal Stat 1500 is how Truck-Lite refers to the same lamp in its LED version. A mounting bezel is available, part # A91BB for black or # A91CB for chrome plated ABS. If either one of these self-grounding bezels is used, use a # A91LW pigtail. If a non grounding bezel or bracket is used, a two wire pigtail like part # A46PB would be needed.
    view full answer...
  • Replacement Tailgate Marker Lights for 1984 GMC C-Series Dually Pickup
    Yes, from what I found, you can use # AL91RB LED lights to replace the five original incandescent tailgate lights on your 1984 GMC C-Series Dually Pickup. These are standard size clearance lights (2-1/2 x 1-3/16) that were used on a variety of different trailer and some truck OEM applications and were sold under a number of brand names. Keep in mind that these lights don't have wires coming out the back, so in order to install them you'll also need a mounting bracket # A91BB to provide...
    view full answer...
    Image 1 for
  • Does Optronics Mini Thin Line LED Marker/Clearance Light # AL191AB Use Grommet # A91GB
    Yes, the Optronics Mini Thin Line LED Marker/Clearance Light # AL191AB can be flush-mounted using the Optronics Flush Mount Grommet # A91GB. This PVC grommet will provide a degree of shock protection for the installed light and its rear opening allows easy access for wiring. If you prefer a surface-mount installation, you can instead use self-grounding mounting bracket # A91BB. The marker light # AL191AB has a 2-prong input on the back; you can use 6-inch pigtail plug # A46PB, or...
    view full answer...
  • Brackets and Wiring for Sealed, Miro Flex, Mini Thin Line LED Marker or Clearance Light # AL191AB
    We do have the parts you need to complete installation of the light. But first, sealed, Miro Flex, Mini Thin Line LED Marker or Clearance Light # AL191AB does not include a base or wiring harness. We have the compatible bases listed as related products on the right hand side of its product page. There is flush mount grommet, # A91GB Self-grounding black bracket, # A91BB Black bracket with open back, # A91BOB Chrome bracket with open back, # A91OB Self-ground chrome bracket, # A91CB For...
    view full answer...
  • What is the Depth of Optronics 2-Wire Pigtail?
    I believe what you are asking is the depth of 2-Wire Pigtail # A46PB, and it is 0.6 inches, which is just 0.1 inches more than the depth of both mounting brackets you were referring to, # A91BOB as well as the self-grounding # A91BB. This means it would protrude ever so slightly from the back of the bracket when attached to lights # AL90RB and # AL90AB.
    view full answer...
  • Are All LED Lights Submersible For Use On Boat Trailer
    When selecting an LED light, if the description states it is waterproof or submersible then the light can be submersed in water. The item you selected, Waterproof, Under 80 Inch LED Trailer Light Kit with 25 Foot Wiring Harness, part # TLL9RK, has encased LED diodes. Water can enter the light lens but not the LED casing. There are also 2 holes that allow water to drain out of the lens. Part # TLL9RK are used for the rear trailer lights for running, turn, and brake lights. For sealed...
    view full answer...
    Image 1 for
  • How Does the Red Side Marker Trailer Light # AL91RB Install and what Parts are Needed to Install
    For the clearance light # AL91RB and the matching amber light you would install the lights in the appropriate bases like # A91BB and then use 2-wire pigtail # A46PB, plug it into the backs of the lights and attach the wires to the existing trailer wiring. The ground wire can be attached directly to the trailer frame. I have included a link to a video review of the clearance light for you.
    view full answer...
  • Replacement Clearance Light and Mounting Bracket for PM150 Amber Light
    While we do not have the exact PM150 model light you mentioned available, we do have a very similar unit with the Optronics Sealed Clearance and Side Marker Light # A91AB. This light measures 2-1/2 inches long, 1-3/16 inches wide, and has a depth of 7/8 inches. The mounting bracket that this light attaches to is part # A91BB. The bracket itself measures 2-7/8 inches long, 1-1/2 inches wide, and 1/2 inch deep. The mounting holes are spaced apart 2 inches, center to center. I have attached...
    view full answer...
  • Is there a Grommet for Peterson Clearance Light # M152A
    For a rubber grommet that will fit the Peterson clearance light # M152A you can use # A91GB. If you are looking for the plastic base we do not carry that particular model and in that case I recommend switching to light # A91AB and using bracket # A91BB with power wire # A91LW (the light grounds through one of the mounting screws with this light and bracket combination).
    view full answer...
  • Clearance Light Base Recommendation for the Clearance Light part # A91AB
    It sounds like you need the Black Mounting Bracket # A91BB. This is the black base for the Rectangular Trailer Clearance and Side Marker Light # A91AB that you referenced. Check out the review videos I attached for these products also.
    view full answer...
  • What Wiring and Accessories are Needed For Side Marker Trailer Light # A91AB
    The Sealed, Mini Rectangular Trailer Clearance and Side Marker Light, # A91AB, requires a pigtail and a mounting bracket. The pigtail is # A91LW. I have included a link to a video showing a typical installation for you. For a bracket, there are a couple of options. For black, use # A91BB. For a chrome finish, use # A91CB.
    view full answer...
  • Is Female Plug Available For Single Wire Male Plug For A91 And AL91 Series Trailer Lights
    The single wire plug # A91LW is designed to plug into a light that has the female plug already installed on the back of the trailer light. The # A91LW has a 12 inch lead wire with the male plug attached. Many of the Series 91 lights have two female plugs which would use the standard 2-prong wire like part # A46PB. If you use a self-grounding bracket like part # A91BB for a series 90 or 91 trailer light, the single wire # A91LW can be used.
    view full answer...
    Image 1 for
  • Troubleshooting LED Single Wire Clearance Lights
    The reason your single wire LEDs aren't working is because you aren't using a ground. Most single wire lights like the Amber Clearance Light with Stainless Steel Hardware # 47-99-006 will have a separate ground like in the mounting hardware. The Thinline LED Clearance and Side Marker Light # AL91RB you asked from will ground through the mounting bracket # A91BB. The mounting with butyl tape is the issue. You need to have a ground connection for your clearance lights to work.
    view full answer...
  • Parts Needed to Install Optronics Submersible Red LED Clearance and Side Marker Light AL91RB
    The Optronics Thinline Submersible Red LED Clearance and Side Marker Light # AL91RB installs using a base, part # A91BOB in black or part # A91OB in chrome finish. A 2-wire pigtail # A46PB will allow for electrical installation. The white wire on the pigtail is ground. If your original light used only 1 wire then its base provided the ground connection. In this case you can use the self-grounding base # A91BB in black or # A91CB in chrome finish. In this case you will use Single Wire...
    view full answer...
  • Mounting Bracket Recommendations For Optronics Thinline LED Clearance and Side Marker Light
    For the # AL91RB trailer lights we have a couple options for mounting brackets. For a self-grounding bracket where the light is grounded through the mounting hardware I recommend part # A91BB. The gasket is included. For a mounting bracket that has an open back you need part # A91BOB.
    view full answer...
  • Trailer Clearance Light Part # A91RB Installation
    To connect the Optronics Red Mini Rectangular Trailer Clearance and Side Marker Light to your existing trailer wiring, you would need the pigtail which is part # A91LW if you were using the self grounding mounting bracket, part # A91BB. If you were using some sort of other bracket that is not self grounding, a two wire pigtail is offered, part # A46PB.
    view full answer...
  • Driver Side Trailer Side Marker Light Does Not Light Up
    It looks like you have the Sealed, Miro Flex, Mini Thin Line LED, # AL191AB. What I think is happening is that there is a bad ground connection. The bracket you are using, # A91BB, has a ground transfer that moves the ground from the terminal in the back to the mounting hole. Check to make sure that the bracket is secured to a bare metal surface that is free of dirt and corrosion. You may try grounding the terminal using a wire instead of through the mounting hardware to get a better...
    view full answer...

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Info for this part was:

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