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

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

Part Number: A91BB
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$4.24
Retail:$10.99
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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). 1-800-940-8924 to order Optronics accessories and parts part number A91BB or order online at etrailer.com. Free expert support on all Optronics products. Great prices 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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  • Reviews (103)
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Optronics Accessories and Parts - A91BB

  • Trailer Lights
  • Mounting Hardware
  • 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 Satisfaction Score:

Ratings & Reviews

4.8

103 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).

by:

Great



by:

Great replacement for the old lights



by:

Works nice overall. Small modification to the plastic needed for the wires to fit.



by:

Looked all over town for this item and never found. Should have looked here first and saved time and money PLUS delivered right to my door.



by:

Product received quickly and as described. Great service. My trailer looks great.



by:

I am using this with another lite system. Fit is perfect. It makes installation a lot eaier than what came with the orignial lite. The black case also hids better than the chrome part. It is all abput the looks.



by:

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



by:

Exactly what I needed, new replacement for old and worn lights



by:

Perfect parts for perfect trailer lighting. Nice products, e-trailer!



by:

Exactly what I needed and fitment was perfect thank you!



by:

Top notch!!! Worked like a champ on my boat trailer. Great product!



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.



by:

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

Mike profile picture

Mike

4/21/2016

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



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!



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.



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.



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.



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.



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.



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



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.



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



by:

Perfect fit!!!! I will add another to my next order to have as a spare.

Darrell profile picture

Darrell

11/7/2018

It’s been a year now and this product is still going strong. I am very happy with this purchase.



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!



by:

I love these mounting brackets. They make the installation of and maintenance of my trailer lights so easy.


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Show More Reviews

See what our Experts say about this Optronics Accessories and Parts

  • Single Plug and Wire for Thinline LED Clearance and Side Marker Light
    Hey Eric! The single wire for the Thinline LED Clearance and Side Marker Light # AL91RB is the # A91LW. If you need the self-grounding mounting bracket it is # A91BB for black or # A91CB for chrome. Don't hesitate to reply below if you need anything else.
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  • 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 replace...
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  • 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.
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  • 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.
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  • 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.
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  • 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...
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  • 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...
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  • 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.
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  • 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.
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  • 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 Bracket...
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  • 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.
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  • 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 if you...
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  • 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.
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  • Looking for LED Version of # AL91RB Mini Rectangular Clearance/Side Marker Lamp
    You bet we do! For the LED version, you'll need part # AL91RB. The lamp can be grommet mounted using # A91GB or surface mounted using a self grounding base like # A91BB for black/ # A91CB for chrome or a standard base like part # A91BOB for black/ # A91OB for chrome. If you use a self grounding base, use the single wire pigtail, part # A91LW or for the standard base, use the two wire pigtail, part # A49PB.
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  • 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.
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  • How Does Optronics Clearance Light MCL-91AK Wire to Two Wire Trailer
    You'd wire the # MCL-91AK by using the bracket the part # A91BB and the single wire part # A91LW. You'd run the power for the light to the single wire and then run the ground wire you have to the mounting hardware of the bracket as it is designed to ground through it.
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  • 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.
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  • Wiring Pigtail and Mounting Bracket Options For Installing Thinline LED Clearance And Marker Lights
    The Thinline LED Clearance and Side Marker Light # AL91AB require certain mounting brackets and plugs that are either already installed on the trailer or are available separately. A Right Angle 2-Wire Pigtail # A46PB will work with the Grommet # A91GB if you are looking to recess the light. Or Mount Brackets # A91OB and # A91BOB if you want to mount them on a surface with the wiring running behind the bracket. The Plug - Single Wire # A91LW is used for Mounting Brackets # A91BB and...
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  • 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).
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  • Are Mounting Brackets Needed To Install Optronics LED Trailer Clearance Lights # AL91RB
    For installation of the Optronics LED Trailer Clearance Lights, part # AL91RB, you will need to use an Optronics Mounting Bracket. You can use either the Optronics Black Mounting Bracket, part # A91BB, or the Chrome Mounting Bracket, part # A91CB. The brackets are sold individually, so you will just need to order the same quantity as the number of lights you have. I have linked a video that show the installation of the Optronics AL91 Series Lights.
    view full answer...
  • 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...
  • 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...
  • 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...
  • Wiring Pigtail Harness for Sealed, Mini Rectangular Trailer Clearance and Side Marker Light A91RB
    For a 2-prong pigtail for light # A91RB you can use # A46PB. If the bracket for the light has the ground connection in it, such as # A91BB, then you can use a single wire pigtail # A91LW.
    view full answer...


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