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> Tracing wires & horn questions
narino
post Mar 27 2019, 10:26 PM
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With the warm weather I've spent the last few days fixing wire connections and removing extraneous wires by the PO. A couple wires have me stumped, hoping for some help from the hive mind.

#1 - I have a heavy gauge red wire that is coming off the alternator, that the previous owner spliced into and ran through the longs to the hot terminal by the fuse box.
  • Is this red wire from the alternator stock? I couldn't find it on the wire diagram.

#2 - The PO ran heavy gauge red wires through the longs to the hot terminal by the fuse box.
  • I do not think this is stock, from what I've read there were no wires in the longs. I've only found reference to the charcoal canister lines in the longs. Could someone confirm whether this is correct or not?
  • If these lines are not stock, then what originally used to go through the hole behind the dash, where these lines currently run? Pic attached for reference.

#3 - I bought some pilot fog lights and went to install them and saw my horns are in the way.
  • Are these horns stock?
  • Before I start tearing more things apart, are there other mounting points to relocate these horns away from the grilles?

Once I get these hot wires figured out I'll feel safer trying to start her and get her back on the road.

Thanks in advance!


(IMG:http://narino.com/images/wire%20to%20alt%2001%20sm.jpg)
(IMG:http://narino.com/images/wire%20to%20longs%2001%20sm.jpg)
(IMG:http://narino.com/images/horns%20sm.jpg)


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bbrock
post Mar 28 2019, 07:31 PM
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The hole where the PO's wire runs through the dash is "custom." There should be no hole there. My hunch is the PO had (or thought they had), a problem with the two large (12gauge?) wires that run from the pos battery terminal through the main harness that are the main power feeds to the starter switch and fuse box, and bypassed them through the long. I'd check resistance end to end through those wires end to end and go from there.

I agree that you should chuck that alternator harness and get new. I can't remember for sure, but I believe the 3-wire portion is supposed to feed through the hole just aft of where it is coming through in your pic but covered by foil tape. The hole it is coming through now is for the heater J-tube. If you new alt harness doesn't come with grommets, you can get them from 914Rubber.

Good luck! (IMG:style_emoticons/default/beerchug.gif)
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narino   Tracing wires & horn questions   Mar 27 2019, 10:26 PM
Chi-town   Wires in the longs = not stock Horns = not stock ...   Mar 27 2019, 10:43 PM
narino   Thanks for the reply Chi-town. Any idea about the...   Mar 27 2019, 11:37 PM
Chi-town   Usually the heavy wire goes to the starter positiv...   Mar 28 2019, 12:01 AM
barefoot   New alternator wiring harnesses are avaliable from...   Mar 28 2019, 04:56 AM
narino   Barefoot - Ahhhh... This explains a lot. I thought...   Mar 28 2019, 09:47 AM
malcolm2   https://colorwiringdiagrams.com/t/porsche I alwa...   Mar 28 2019, 10:26 AM
narino   malcolm2 - Funny, I just ordered these a few days ...   Mar 28 2019, 11:48 AM
ValcoOscar   I'm in So Cal (90621). If you want drive down...   Mar 28 2019, 10:34 AM
76-914   That Romex is priceless. :beer2:   Mar 28 2019, 06:08 PM
bbrock   The hole where the PO's wire runs through the ...   Mar 28 2019, 07:31 PM
narino   bbrock - Thank you! That hole by the dash was ...   Mar 28 2019, 09:10 PM
narino   Update and more questions. Tested resistance to wi...   Apr 3 2019, 12:56 PM
Dave_Darling   A while back a few wires to my headlight switch b...   Apr 3 2019, 02:14 PM
narino   Thank you @Dave_Darling . I had seen that articl...   Apr 3 2019, 03:18 PM
bbrock   Since it sounds like you'll be trying to use t...   Apr 3 2019, 03:45 PM
narino   Thanks @bbrock . I'm going to rebuild the al...   Apr 3 2019, 06:33 PM
JeffBowlsby   You can test the switches with this:   Apr 3 2019, 09:16 PM
Dave_Darling   The headlight switch is a switch--or rather, sever...   Apr 3 2019, 09:23 PM
narino   Jeff & Dave thank you so much!   Apr 3 2019, 11:24 PM
narino   Finally got all the supplies to build the cables. ...   May 12 2019, 04:07 PM
76-914   IIRC, there is/are 1 or 2 small holes in that big ...   May 12 2019, 04:58 PM
narino   76-914 - awesome possum, thank you!   May 12 2019, 08:05 PM
narino   A setback. After cleaning the fuse panel under the...   May 31 2019, 05:13 PM


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