jumper post wire coroded

[georges 928S]

Hi guys, trying to clean the jump post, i found the heavy brown wire corroded with green stuf , i peeled some of insulation to get to a clean spot , no luck. how do i go about cleaning this wire and were does it go. is why iam having a cold start problem. appriciat any response. Thanks Ed.

[MPDano]

Pictures. Brown is ground FYI. I hope your talking about two different things as the Jump Post is a Hot Positive Post.

[riber.bentsen]

It goes brown with age and heat, mine is too. Further down it gets red again..

[georges 928S]

Hey guys, iam talking about hot post wire next to 14 pinbox ,there are 2 of them
going to the post, red one and brown one and they connects to the hot post.
the brown is the one cordded , i striped some of it about 6 inches and its all green color. Ed.

[MPDano]

Are you talking about this one that "looks" brown? Probably was Red like Riber says. Anyways, I can't remember if this is the one that travels down to the Starter. If so, I would just replace it with a similar gauge wire. Just run it next to the Harness.

[georges 928S]

Originally Posted by MPDano

Are you talking about this one that "looks" brown? Probably was Red like Riber says. Anyways, I can't remember if this is the one that travels down to the Starter. If so, I would just replace it with a similar gauge wire. Just run it next to the Harness.

Hi Leo, looking at your picture the red wire is on the right side of picture and the

one on left is brown and that one is got corrosion (green ) Ed.

[MPDano]

I actually linked another posts pic. Can you trace where it goes? The "brown" wire. I know Neil knows.

[neil30076]

Sure, can help here , will be back on line tomorrow am and ready to assist....

[neil30076]

George, that wire is the main feed from the back of the alternator to the post. You can replace it completely with a new 4gauge ( IIRC) wire, but it must be a high temp wire as it runs over the hot engine block.

[DougM]

As Neil stated, that is the main lead to the alt. and it runs through the main wiring harness across the front of the motor. While you are there, you may want to pop the top off the 17 pin connector and take a look at their condition. If that heavy main wire is pretty bad, then I bet that the smaller main leads from the pins at the connector are worse or not too far behind.

If your harness is toast, I have a spare one from an '84 Euro S that I could sell.

[georges 928S]

Thanks Neil and DougM, Doug m, i will check what you stated on the thread
about the harness . is the harness in good shape, i will let you know when i
check further on. Thanks both of you. Ed.

[neil30076]

Not sure a 84 euro harness will work - and the connector on a 82 is 14 pin, btw.

[Maleficio]

Here's how I dealt with my rotten wires in that area:

http://forums.pelicanparts.com/porsche-928-technical-forum/544852-found-another-rotten-wire-today-pics.html

[neil30076]

or you can remake the entire harness!

[Maleficio]

Cool.

[riber.bentsen]

I was at my garage today, and snapped a few pictures of my 14-pin connector and jump post.. Don't know if you can use them, but here you go:





And, just for kicks, some pics of my teeny-tiny garage, where my car (and I sometimes) spend those long lonely winter nights... That's what you get for living in the city :/

[georges 928S]

i cleaned my brown wire which goes to the alternator from hot post about 8 inches
from hot post and that made a lot difference to my gage, before only showed about
between 10 and 11 on the gage, after cleaning it reads bettween 12 and almost 13. all i did was used battery head cleaner foam spray and washed it with water.
Ed.

[MPDano]

Originally Posted by georges 928S

i cleaned my brown wire which goes to the alternator from hot post about 8 inches
from hot post and that made a lot difference to my gage, before only showed about
between 10 and 11 on the gage, after cleaning it reads bettween 12 and almost 13. all i did was used battery head cleaner foam spray and washed it with water.
Ed.

Interesting, but corrosion does damage to metal which is your wire. Why trust it, just run a new one from 14 Pin to your Alt. It's a relatively short run.

[georges 928S]

Hi Leo, the wire starts from hot post to alternator, i will do that once i move to my
new house with 3 garages and RV parking, now i live in a condo and have no
place to work on it, i still have to clean my 14 pin wires and my CE panel. by the way, the red wire on left side of hot post looking at the picture, where does it go or hooked to. Ed.

[DougM]

My spare for sale is actually a 14 pin. Not sure why I was thinking 17 pin? Here are pics.