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Re: Removing the entire wiring harness - advice?

Posted: Sun Apr 28, 2019 7:07 am
by bartigue
Fortunately a 69 Spider is a simple car relative to any x1/9. And yes I need to remove it intact. I doubt illl dip the car but the amount of work needed dictates removing the harness.

Re: Removing the entire wiring harness - advice?

Posted: Sun May 12, 2019 8:29 am
by bartigue
Update

I finished removal of the rear harness section yesterday. The harness on the 69 runs from three points in the cabin to the trunk:

- two connectors behind the fuse box
- one connector to the reverse light switch

The reverse light switch wiring was the only one difficult to deal with as it was obviously assembled prior to transmission installation. Held fast by a retainer bolted between the transmission and body it is almost impossible to remove with the transmission in place. Adding to the complexity is it sits above the muffler, blocking access. A lot of work for one wire, and then —- the connectors were oxidized and fell off. I laughed, I could have just cut it.

In all the wiring is in excellent condition. I’ve said before that the early cars are made of better stuff and I see it in everything. Copper wire, plated connectors, more wire insulation. Completely usable 50 year old harness. I’ll tackle the engine bay harness later this week.

Attached is a photo of the connection point above the foot-operated washer pump.
5E16F8AA-2B14-4B75-B081-0BDC3B93597B.jpeg
5E16F8AA-2B14-4B75-B081-0BDC3B93597B.jpeg (3.94 MiB) Viewed 620 times

Re: Removing the entire wiring harness - advice?

Posted: Sun May 12, 2019 9:03 pm
by miker
I am really curious to see what you use for cleaning the harness, the connectors of course but also the colored wires too. After so many years it can be hard to tell what the white/blue is from white/purple. Maybe with the harness out you could throw the whole thing in the dishwasher. Could try that with some old partial harness.

Re: Removing the entire wiring harness - advice?

Posted: Mon May 13, 2019 12:30 am
by davedecker4
I am one to advocate for using a dishwasher on many parts if you can do it without getting caught. It works best on aluminum parts with dry detergent. I'm not really sure its best to immerse wiring or other electricals however. Maybe some alcohol wipes or other cleaner wipes might help. Even a soapy rag would be safer.

Re: Removing the entire wiring harness - advice?

Posted: Mon May 13, 2019 12:50 am
by mark
I like to wipe each wire down with a lacquer thinner soaked rag. It removes the nasty tape residue and restores the color.

miker wrote:
Sun May 12, 2019 9:03 pm
I am really curious to see what you use for cleaning the harness, the connectors of course but also the colored wires too. After so many years it can be hard to tell what the white/blue is from white/purple. Maybe with the harness out you could throw the whole thing in the dishwasher. Could try that with some old partial harness.

Re: Removing the entire wiring harness - advice?

Posted: Mon May 13, 2019 7:54 am
by friedman
I used brake cleaner and a rag but that won't have any effect on corrosion of spade terminals.

Re: Removing the entire wiring harness - advice?

Posted: Mon May 13, 2019 11:09 am
by bartigue
Mild degreaser and a wheel brush (nylon brush). Works well. These colors haven't faded so I'm not worried about that.

If you put it into a washer don't use hot dry it will harden the wires. I wouldn't washing machine it.