3rd Brake Light CHMSL

The stock systems

Moderator: F9K9

3rd Brake Light CHMSL

Postby RobsZRinAR » Mon Apr 06, 2015 11:10 am

Hey gang,
I searched and found a couple of other threads on the subject but they haven't lead to my resolving the problem.
A Super-Trooper pulled me over last week just to inform me that my High Mount Stop Light was out. No ticket - just a friendly notice. '03 S-10 CC ZR5.
As I often have my 6 yr old grandson with me, I'd like to remain as safe as possible!
I pulled the lens (cracked - fixed with super glue), both bulbs were black. I thought "Ahh, sweet! Easy fix!" New bulbs didn't do it. No water was in the housing after several days of rain but, new lens is on order from LMC.
I found the relay CHMSL in the fuse block under the hood and replaced that. Still No-Go.
This morning, I crawled under the dash and checked the connections on the Brake Light Switch. No way to test it at the moment but, from what I gather from the other threads, this light is on its own circuit and relay. The switch should have no say in the matter, correct?
If I am right so far, I need to start looking for shorts or opens. Problem is - I can't find where the harness is coming from, even with a schematic. All connections at the light are nice and clean. Do I have to rip out the liner to trace these wires forwards?
Is there a 10A fuse somewhere that no manual is telling me about? Please advise if you have had this problem.

Thx, Rob
Posts: 11
Joined: Tue Feb 24, 2015 7:49 am
Location: Mtn Home, AR

Re: 3rd Brake Light CHMSL

Postby ApproachMedium » Mon Jul 20, 2015 4:51 pm

there should be a fuse for the 3rd brake light if it has its own relay. it should be under the hood keep looking. I dont have my truck here just yet to check but i swore i saw it. It should be buried by itself between some relays and not with other fuses
Knowledge has no value unless its shared with others.
Exploration Machine- 02' CC V8 swap. 300K+
Portable Roller Coaster- 07' MKV VW GTI
Its another Jeep- 98 TJ
Crew Elite
Crew Elite
Posts: 983
Joined: Tue Nov 17, 2009 1:20 am
Location: Jersey Shore

Return to Stock Electrical / Audio / Lighting

Who is online

Users browsing this forum: No registered users and 1 guest