Third Brake Light Still Flashing After Installing the Pacer 3rd Brake Light Module

Question

Question:

Hi, i am trying to wire an LED 3rd brake light for a camper shell on a 2018 silverado. I am wiring into the trucks 7pin trailer harness to get the connections i need. The caps led dome light is wired up and working as expected. To wire the 3rd brake light, i tried the pacer 20-702 module, and have it wired per the instructions into the 7pin harness. There is a fuse between the module and the light. Problem is, the 3rd brake light flashes with either of the blinkers being turned on. Can you recommend any troubleshooting to try? Could i just have a defective module? Thanks

asked by: Chad

0

Expert Reply:

To me it sounds like you just have a defective unit and just need to replace it. The purpose of the module # PP20-702 is to filter out the turn signal and illuminate the 3rd brake light only.

So, if it is not doing that and you've confirmed you wired everything correctly, you'll just want to replace it. I have attached a wiring diagram for you to check out to verify that you've wired everything correctly.

expert reply by: Bryce D

0

PP20-702 Wiring Diagram
(click to enlarge)

Answer 1

If the third brake light is still flashing with the Pacer Performance 3rd Brake Light Logic Module part #PP20-702 installed then the unit is either installed incorrectly or faulty. I have attached a wiring diagram you will need to look over and…

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Answer 2

The 3rd Brake Light Logic Module part #PP20-702 is the solution to your problem. It's very cost effective and easy to install. The module simply takes the stop/turn signal from the vehicle whether that's the right or left side and…

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Answer 3

In most cases when this occurs, it's down to the wiring being connected to the wrong spots on the 7 way trailer plug. You'll want to be sure you're using the 3 o'clock and 9 o'clock pins when looking at the back of the plug.…

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Answer 4

Yes if you used a self-tapping screw like the part #FA1131822 you could use it to ground trailer wiring to a frame. Sometimes aluminum trailer frames aren't quite adequate so you may need to run a jumper wire to the main ground wire of the…

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Answer 5

I spoke to my contact at Curt about the Vehicle to Vehicle Tail Light Converter part #C56196. They informed me that only one side (right side stop/tail or left side stop/tail) of the two wire system needs to be attached to the converter box in order…

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Answer 6

The GloLight Thinline LED Trailer Tail Light #STL179RB and the Pacer Performance 3rd Brake Light Logic Module #PP20-702 is all that is needed because you have LED brake lights. The load resistors are not needed for your application. They are only…

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Answer 7

The running light/brake light on your salter should have a wire ran to it for the brake light and one for the running light. You'd want to use the #PP20-702 to isolate out the brake light like you need to run to the stoplight circuit of your…

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Answer 8

Typically, the black wire is 12-volt power, and the red wire is left turn/brake lights. But you cannot always go by color. If the wiring in question is on the trailer side, then there are two ways to determine which color wire does what function. You…

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Answer 9

The Pacer Performance 3rd Brake Light Logic Module part #PP20-702 is your best option to isolate the brake signal from the turn signal for a third brake light. However, the issue that you are experiencing is that some LEDs simply don't draw…

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Answer 10

To wire in the 3rd brake light from the camper shell to your 2019 Chevy truck I recommend using the Pacer 3rd Brake Light Module #PP20-702. This is designed specifically for single LEDs and will filter out the turn signal input so that it doesn't…

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Answer 11

The part #PP20-702 has to connect to both the left and right hand turn signal/stoplight circuits in order to separate out the stoplight. The reason that is because it waits to see voltage on both circuits at same time to then allow the stoplight…

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Answer 12

In order to power the third brake light on a truck bed cap you will need the Pacer Performance 3rd Brake Light Logic Module part #PP20-702. The reason you need the module is that the brake/turn signal circuits and trailer lighting circuits are…

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