Installation of Optronics Sealed, 6-1/2 Inch Oval LED Trailer Stop, Turn, and Tail Light

Updated 01/23/2020 | Published 03/07/2016

Products Featured in This Question

Optronics LED Trailer Tail Light - Stop, Turn, Tail - Submersible - 10 Diode - Oval - Red Lens

(2198)

$16.80

16-14 Gauge Butt Connector - 5 Pack

(31)

$4.26

3-Wire Pigtail for Optronics Trailer Lights - 3-Prong PL-3 Plug - 10" Lead

(394)

$3.83

PVC Grommet for 6-1/2" Oval Trailer Tail Lights

(1003)

$3.01

Trailer Light Mounting Bracket for 6-1/2" Oval Trailer Lights, Steel - Black Powder Coat

(224)

$14.80

Hook Probe Circuit Tester

(67)

$13.14

Optronics LED Trailer Light - Brake, Tail, Turn - Submersible - Oval - Red

(1755)

$12.44

Question:

I brought the sealed 61/2inch oval trailer lights but nothing came with them tell me how to install them.

asked by: Milton A

Expert Reply:

Thank you for your purchase from etrailer.com! The Optronics Sealed, 6-1/2 Inch Oval LED Trailer Stop, Turn, and Taillight # STL78RB that you purchased will need to be hardwire installed on your trailer.

You will want to connect the light to your trailer's wiring by function. You can use a circuit tester, like # PTW2993, to determine the functions of your trailer wiring. The white wire on the light will need to be grounded. I recommend running the light ground back to the main trailer ground. The red wire on the light will need to connect to the turn signal and brake light wire on your trailer. The black wire on the light will connect to the running light wire on your trailer. The light will connect to your trailer's wiring with butt connectors, like # 05731-5.

The # STL78RB light is a flange mount light with 4 mounting holes in the center of each side, spaced 7 inches apart lengthwise and 2-3/4 inches apart widthwise. I have attached a photo showing these mounting dimensions for you. I have linked a video showing the installation of this light on an enclosed trailer for you.

I also noticed that you purchased the Trailer Light Mounting Bracket # BK70BB, the PVC Grommet for 6-1/2 Inch Oval Trailer Taillights # A70GB, and the 3-Wire Pigtail # A45PB. These components are not necessary to install the # STL78RB light, but are needed when installing a light like the Optronics Trailer Taillight # STL72RB. This light is a recessed mount light that installs using a grommet. I have also linked an installation video of this trailer light for you.

expert reply by: Victoria B

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Bob W.

1/23/2020

I put a new oval light on my covered snowmobile trailer the blinker wont work but when I put the flashers on it blinks HELP

Jason S.

1/23/2020

It sounds like it is a ground issue on your light. Some functions have more power delivered and that can overcome a week ground. Make sure you have a clean metal to metal connection at your ground free of corrosion, debris, even paint or powder coat. I recommend using sand paper even if it looks clean to ensure connection. You can use dielectric grease like # LT37534 to keep corrosion away from that bare metal. If your trailer is aluminum, then you may need to add a jump wire to another location to provide a better ground.