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View Full Version : Wiring Help


Pr8r
07-17-2013, 09:25 PM
I don't even know where to begin on this. Not sure what wires go where, they were cut and taped. Looking to fire the motor off, then may replace the wiring harness.


2747

2748

Hank70SS
07-18-2013, 06:59 AM
Looks like the headlight wires. The black ones with the lugs are grounds and get screwed to the rad support. I assume this is a Chevelle you're working on, what year?

Pr8r
07-18-2013, 07:20 AM
Its a 70 Chevelle. the wiring is butchered trying to find which wires go where Chilton manual is pretty worthless.

Hank70SS
07-18-2013, 07:43 AM
The 3 wire connector in the 2nd pic looks like it's for the high beam. Should be another on the other side of the car. Should also have a 2 blade connector on each side for low beams.

I had a 70 wiring diagram but my laptop got wiped out a few weeks ago. I'll look on the other computer and backup drive to see if I can find a copy.

Pr8r
07-18-2013, 03:04 PM
Are you able to send a picture of how your car is wired so I can see you wire colors and what they go to. Thanks

Hank70SS
07-18-2013, 04:01 PM
Windshield and rear window of mine are out right now. Cleaning up the pinch weld so the car is covered with plastic tarps. May be able to get a picture tomorrow.

shadowgray396
07-18-2013, 06:23 PM
This picture is of the left side, but I agree with Hank High beam headlight plug.

http://i777.photobucket.com/albums/yy58/shadowgray/Final%20Build%2070%20chevelle/Wiring-1.jpg (http://s777.photobucket.com/user/shadowgray/media/Final%20Build%2070%20chevelle/Wiring-1.jpg.html)

Pr8r
07-18-2013, 08:31 PM
Thanks I appreciate the picture.

Pr8r
07-19-2013, 10:10 PM
What color is the coil wire?

Hank70SS
07-20-2013, 07:04 AM
Ignition coil wire from the bulkhead connector is a cloth covered wire. Originally was white or cream colored, they turn brown with age. It should be easy to find because of the different insulation. Also a yellow wire from coil to R terminal on starter, it's a regular wire. The above assumes wiring is original and still running points style ignition.

Pr8r
07-20-2013, 06:46 PM
2751

2752

2753

2754

I am running an HEI Distributor. I was able to trace some of the wires that were still connected. Is the brownish wire in the picture the coil wire ? I was looking at a 69 chevelle wiring schematic and it says that the purple wire goes to the starter. On a HEI distributor, do I run the coil wire to the BATT on the distributor ? I am kind of lost on this. Spent a lot of time working on a ford with points which was basic now that I'm on this I am wondering what needs to go where to get it to start. I appreciate any help.

Hank70SS
07-21-2013, 07:21 AM
The first pic looks to be the engine wiring harness. Yes the purple wire goes to the S stud on the starter. Orange goes to heater blower motor. Blue drops down on drivers side and goes to oil pressure sender, above oil filter. Broken red wire may have been someone's attempt to replace the original resistive wire to run an HEI. Can you see where it use to go in the connector?

Second pic looks like the forward light harness. Goes to headlights, parking lamps, etc. Also feeds power to the fuse block.

Third pic, brown wire looks like the one that goes to the brake proportioning valve, on the frame below the mater cylinder.

Yes, power to the HEI plugs into the BATT terminal on the distributor.