Where in the cluster of wires does the Rear turnsignals and Rear Brake lights join up on the Yellow and Green wires?

James Cahill was trying to explain it to me ... but i havent been able to get him back on the phone since...

I noticed on a Sunbird (which has a second bulb for turn signals) the Yellow is Left turn, Green is Right turn, and Sky blue wire is Brakes... and in my wiring, i dont have a skyblue wire, so i assume the junction is up front somewhere...

I assume that the junction is under the dash, what i want to do is cut the brake lights out of the system completely so that the yellow and green wires just run turnsignals, and i'll splice my brake lights off the third brake light...

BTW i have R32 skyline tails which have the separate turn signal...

You dont want to cut it off at the junction, or your 3rd brake light will not work, either...why not just cut the sky blue wire off at the harness connector just rear of the trunk hinges on the left side, and wire directly into the brake lights on your new tails?

Speaking of which, I just dropped some Cavy Ph1 tails into my car, and also notice the lack of a light blue wire going into the light sockets, so my only brake light right now is the spoiler light...

there is no sky blue wire in my trunk near the hinges...

nor in the loom of wire following back from that harness that goes up the driver side of my car...

under my dash turns in to a cluster @!#$ of wires with the factory wiring, my alarm/rem start, wiring for the door popping solenoids that connect to the alarm, dash glo guages wiring, and all my switches... so its gonna take some time to trace it all back...

I've been wicked busy at work, and I don't get cell service at home...sorry

I don't know the wire colors off hand, but whatever wire color goes to both sides is the tail light (thats a given). In order to seperate the brake from the turn signals, you'll need to run two more wires from the turn signal switch to the trunk (but you can't use the factory wires like you said since they are hot when the brake switch is depressed), one for left and one for right. Cut the factory wire right after the switch and attach the new wire to it. The only time the brake/turn wire at the bulb socket will ever be hot now is when you press the brake pedal (since you cut the wire at the turn signal switch).

Or, you could do it a whole lot easier by swapping the body wiring harness out of a Sunbird, since they already have seperate turn/brake/tail lights

Dont worry about it James... i know your a busy man...

Where would i swap this harness out at... and i'd still have to run a wire back for the brake light because on a sunbird there is a skyblue wire that is brakes... yellow left turn, Green right turn... on a PII cavy there us just a yellow (left turn and brake), and green (right turn and brake)... it would nice to kill the brake from the yellow and green and just splice the brakes off the third brake

You could do it that way too. In fact, that would be easier. Just cut the brake light wire off each socket and run a new wire to/from the CHMSL for each brake light. All that would be left is the turn signal wire going to each socket, and the new wire you just added.

wait... cut what off each socket??? theres only three wires each

1) The ground
2) the parking lights
3) the wire that is brake and turn signals...

imma tear apart under the dash tonight (hopefully... if my lazy ass lets me) ... and start playin with the test light till i got it figured out...

James if ya get a chance, give me a call tonight... if you're busy dont worry about it...

There's 2 likely options for the wiring difference in the Sunbird. 1) The difference is wired in at the base of the turn signal switch, or 2) The wiring from the brake light on the Sunbird is connected to the rear light harness and bypasses the turn signal switch.

To disable the combination brake/ turn lights on the combined (Cavalier style) lights disconnect the white brake wire from the brake light switch at the turn signal switch. This disables the brake circuit and leaves the turn signal working. You could run a separate wire back from here. This may be a wise idea... the 3rd brake switch sometimes has smaller contacts and doesn't handle extra current well.

-->Slow

slowolej wrote:To disable the combination brake/ turn lights on the combined (Cavalier style) lights disconnect the white brake wire from the brake light switch at the turn signal switch. This disables the brake circuit and leaves the turn signal working. You could run a separate wire back from here. This may be a wise idea... the 3rd brake switch sometimes has smaller contacts and doesn't handle extra current well.

So then i can just splice off that white wire right and run that to the back and then split it again for left and right in the trunk...

i was thinking about the 3rd brake light thing... im already running a 4th brake light on my spoiler (LEDs) so i rather not tap in to that unless i had to...

thanks man

Slow is saying the same thing I did, he just made it easier to understand with the wire colors. You have to cut off the socket anyways right? Since the Skyline tails use a different socket?

ive already cut the socket off...

The cavalier had 1 light with those three wires...

Skyline has 3 lights with 4 wires...

but slow was refering to the other end... under the dash... i figured it out....