brake light wont work
Thread Starter
|
Member
Joined: May 2006
Posts: 11
Likes: 0
brake light wont work
The 3rd brake light is the only one that will come on the fuses are ok and I cont find any broken wires the turn signels flash like mad when I turn them on any help would be great
Technical Article Contributor
Joined: Jun 2002
Posts: 10,511
Likes: 10
From: Under the flightpath of old ORD 22R
1. Dumb question..have you tried changing the bulbs ?
2. Have you used a meter in the S/T/T socket, to see if you have power with the brakes on ?
2.1. At the same time, check the L & R Stop / turn circuits in the 4 pin trailer tow adapter with a meter.
The turn signals flashing real fast just clicked with me, that indicates that the flasher circuit cannot see the brake / turn signal element in the circuit.
These 3 things will help with pointing to what is going on.
Additional question :
4. I am guessing the truck will shift out of park, am I correct ?
4.1. This is part of the function for the BOO ( Brake On / Off ) switch, to get the shift interlock to release.
2. Have you used a meter in the S/T/T socket, to see if you have power with the brakes on ?
2.1. At the same time, check the L & R Stop / turn circuits in the 4 pin trailer tow adapter with a meter.
The turn signals flashing real fast just clicked with me, that indicates that the flasher circuit cannot see the brake / turn signal element in the circuit.
These 3 things will help with pointing to what is going on.
Additional question :
4. I am guessing the truck will shift out of park, am I correct ?
4.1. This is part of the function for the BOO ( Brake On / Off ) switch, to get the shift interlock to release.
Senior Member
Joined: Oct 2002
Posts: 7,295
Likes: 125
From: St. Louis (Out in the woods)
I'd be expecting the MFS or its connector to be the fault. It usually is if the BOO is working (3rd light works).
By 2000, the shift interlock was moved to a separate section of the BOO switch and isn't power by the same circuit.
Do the front turn signals work?
Damn, don't have a 2003 EVTM yet. Been downloading the DVD for a month - 5.5 gig on a slooooow circuit. Almost there....
Steve
By 2000, the shift interlock was moved to a separate section of the BOO switch and isn't power by the same circuit.
Do the front turn signals work?
Damn, don't have a 2003 EVTM yet. Been downloading the DVD for a month - 5.5 gig on a slooooow circuit. Almost there....
Steve
Senior Member
Joined: Oct 2002
Posts: 7,295
Likes: 125
From: St. Louis (Out in the woods)
Trending Topics
Senior Member
Joined: Oct 2002
Posts: 7,295
Likes: 125
From: St. Louis (Out in the woods)
Originally Posted by DANSTER302
any hints on testing? procedure, tools... i can handle mechanical stuff. electrical eats my lunch
Steve
