Full Version: Brake Light Wiring
does someone have a picture or drawing of the rear brake light wiring? I have 5 wires and five posts but i'm not going through all 121 combinations and testing them. Someone help!
try doing a search here on the BBS, I'm pretty sure someone posted it....I got tired of losing the diagram, so I literally drew the pin outs on my trunk floor 
(my car is far away from being anything "nice")
914 wiring diagrams
these "might" help
(my car is far away from being anything "nice")914 wiring diagrams
these "might" help
If it was really only 121 possibilities, I'd say you were just being lazy. However, there are 3,125 possibilities, so I think you're right to ask. 
Out of the 5 wires, one will be ground, and using the f-d up German way of things, that means a brown wire. One other will have NOT have a matching wire on the other side, so that's the turn signal wire. With three remaining wires and three posts, you're down to 27 combinations, so stop being so lazy and do trial and error. Just hooking one up at random you have a 1 in 3 chance of getting it right. Test it, and you'll quickly figure out if it's the reversing light, the taillight or the brake light. Now you only have 50/50 odds on the last two, so no excuse...
(feeling like a real smartass today...)
Out of the 5 wires, one will be ground, and using the f-d up German way of things, that means a brown wire. One other will have NOT have a matching wire on the other side, so that's the turn signal wire. With three remaining wires and three posts, you're down to 27 combinations, so stop being so lazy and do trial and error. Just hooking one up at random you have a 1 in 3 chance of getting it right. Test it, and you'll quickly figure out if it's the reversing light, the taillight or the brake light. Now you only have 50/50 odds on the last two, so no excuse...
(feeling like a real smartass today...)
Combinations are factorial, not exponential. The same wire shouldn't go to every other post as well, so options go down as posts are taken -- 5*4*3*2*1
2 post = 2 combos
3 post = 6 combos
4 post = 24 combos
5 post = 120 (It appears one of us has an 'off by one error')
(uber smartass)
2 post = 2 combos
3 post = 6 combos
4 post = 24 combos
5 post = 120 (It appears one of us has an 'off by one error')
(uber smartass)
QUOTE(Mueller @ Sep 1 2004, 12:10 PM)
try doing a search here on the BBS, I'm pretty sure someone posted it....
that was me. i posted pictures of each side here a while ago in a similar post.
Andy
QUOTE
Combinations are factorial, not exponential.
Doh! I'm a dumbass, not a smartass! (the shame...)
May be a dumb ass but to your brake lights work??? 
ok. i can find the ground but where does that go? and i guess there are 120 possibilities, i added the 1 instead of multiplying. if someone has a picture that says what color goes on what post that would be perfect.
QUOTE(SirAndy @ Sep 1 2004, 12:56 PM)
QUOTE(Mueller @ Sep 1 2004, 12:10 PM)
try doing a search here on the BBS, I'm pretty sure someone posted it....
that was me. i posted pictures of each side here a while ago in a similar post.
Andy seems like today is "i don't read andy's posts" day ...
Andy
Here's what I have from my records:
Electrical connection: row 1, left-to-right: (1) wire white/black, (2) wires black/white, (2) wires white/brown. row 2, left-to-right: (1) wire black/white, (2) wires brown
Hope this helps.
Electrical connection: row 1, left-to-right: (1) wire white/black, (2) wires black/white, (2) wires white/brown. row 2, left-to-right: (1) wire black/white, (2) wires brown
Hope this helps.
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