 Anyone built their own wiring harness?, My '75 2.0 has a trashed harness |
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| Frankvw |
 Jul 21 2016, 08:54 AM
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#21
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working on my first 914 !  Group: Members Posts: 653 Joined: 13-April 16 From: Holland, the Netherlands Member No.: 19,896 Region Association: Europe  |
Hi Lars S, nice work, looks like a fun project. How did you get the correct lenghts ? (since the original was chopped in small pieces)
Did you do it by measuring in the car or did you have another method to determine that ? |
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| JeffBowlsby |
Jul 21 2016, 09:03 AM
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#22
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 8,974 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None 
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QUOTE(Jeff Hail @ Jul 20 2016, 10:13 PM)  Were on to you. Please stop impersonating the artist formerly knows as Jeff Bowlsby. You write like Jeff, get technical like Jeff, use his screen name etc. Have a clone website just like Jeffs. The only way to clear this up is the real Jeff will stand up and make chassis harnesses. HA! Too phunny...! The chassis harnesses are unique to each model year, and they are not interchangeable due to differences in the dash area, seatbelt interlock circuits etc. About 70 different combinations of wire gages, colors and striping with 170+ circuits. 32 feet long. Not an easy task. I'll get back to you when thy are ready but it will be awhile.... You are the real artist here, love seeing your metal work. |
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| larss |
Jul 21 2016, 09:11 AM
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#23
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Member Group: Members Posts: 431 Joined: 10-September 09 From: Sweden Member No.: 10,787 Region Association: Scandinavia |
QUOTE(Frankvw @ Jul 21 2016, 03:54 PM) Hi Lars S, nice work, looks like a fun project. How did you get the correct lenghts ? (since the original was chopped in small pieces) Did you do it by measuring in the car or did you have another method to determine that ? Yes this was a fun project! I measured the distances in the car...in some places I test routed one wire just to see the exact lenghts, where the loom should split etc then I put nails on the board at that distance. In general I did not put terminals on the ends before fitting of the whole harness so i made every wire some cm's longer just in case. Before fitting I also put PVC tube and black tape on as in the picture. Print out a large wiring diagram on paper so you can mark each wire after it is completed, note new colors and make comments etc. Lars S |
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| barefoot |
Jul 21 2016, 02:07 PM
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#24
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Senior Member Group: Members Posts: 1,411 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States
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QUOTE(aggiezig @ Jul 20 2016, 02:14 PM) Hey everyone. New to 914's but not new to wiring harness(es). Curious if anyone out there has built their own harness? Options for replacement right now look like either:
I'm contemplating "rebuilding" the harness using what I have in the car and a wiring diagram as a template. Meaning, I'd label each wire, pull it all out, and build a new harness side-by-side with the old and diagrams as a guide. Surely, I could do this for less in materials (obviously not counting my labor) than a new $2k+ complete harness? Wiring unser my dash got trashed & I was able to source a full chassis harness off E-Bay for $100. You'll never find all the same color/sizes for a harness, so you'll have to do with much fewer colors, so tracing stuff will be FUN. Put WTB add in here, surely somme good ones out there. |
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| aggiezig |
Jul 21 2016, 02:10 PM
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#25
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Porsche Wannabe Group: Members Posts: 319 Joined: 13-January 16 From: Los Angeles, CA Member No.: 19,557 Region Association: Southern California
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QUOTE(barefoot @ Jul 21 2016, 03:07 PM) Put WTB add in here, surely somme good ones out there. Thanks for the tip, I've got an WTB ad posted. How much difference is there between year models for the main chassis harness? I know that they are all "different" - but would it be to the point to where I couldn't make an earlier harness work with some minor modification? Still also contemplating the idea of a painless / watson's / universal harness, since I pretty much have a blank slate at this point. |
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| Mark Henry |
Jul 21 2016, 02:18 PM
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#26
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
One thing I'll add about harnesses is that I'd like beat the living shit out of any PO that cuts original harness. (IMG:style_emoticons/default/mad.gif)
Over the years some have ragged on me about the Ford Solenoid fix, the thing is I've NEVER cut a single factory wire doing this, EVER! I'm in a pissy mood right now because I'm fixing a ghia with a hacked harness....grrrrr!!!! (IMG:style_emoticons/default/ar15.gif) (IMG:style_emoticons/default/slap.gif) (IMG:style_emoticons/default/headbang.gif) (IMG:style_emoticons/default/chair.gif) |
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| aggiezig |
Jul 21 2016, 02:21 PM
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#27
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Porsche Wannabe Group: Members Posts: 319 Joined: 13-January 16 From: Los Angeles, CA Member No.: 19,557 Region Association: Southern California
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QUOTE(Mark Henry @ Jul 21 2016, 03:18 PM) One thing I'll add about harnesses is that I'd like beat the living shit out of any PO that cuts original harness. (IMG:style_emoticons/default/mad.gif) (IMG:style_emoticons/default/agree.gif) |
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| JeffBowlsby |
Jul 21 2016, 11:45 PM
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#28
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 8,974 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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Here is a chart of the differences between model years.
http://bowlsby.net/914/WiringHarnesses/914...nessIDGuide.pdf Don't even think for 1 second about trying to adapt a harness from a different model year to your car, get the correct model year harness identical for your cars model year. |
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| aggiezig |
Jul 22 2016, 07:57 PM
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#29
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Porsche Wannabe Group: Members Posts: 319 Joined: 13-January 16 From: Los Angeles, CA Member No.: 19,557 Region Association: Southern California
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Just thought I'd post some pics of my rat's nest. Most of the wiring in the cabin is all there, albeit many wires are frayed, missing sheathing or snipped. The wiring in the front trunk is there, but all cut. The harness is completely cut past the firewall - so nothing present past that.
Relay board: (IMG:http://www.914world.com/bbs2/uploads_offsite/i120.photobucket.com-19557-1469239029.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i120.photobucket.com-19557-1469239029.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i120.photobucket.com-19557-1469239029.3.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i120.photobucket.com-19557-1469239029.4.jpg) |
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| aggiezig |
Jul 22 2016, 10:42 PM
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#30
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Porsche Wannabe Group: Members Posts: 319 Joined: 13-January 16 From: Los Angeles, CA Member No.: 19,557 Region Association: Southern California
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Also, thought I'd post these for anyone who might need in the future. I found via google image search and combined them / cleaned them up in photoshop. Be warned, they are huge files.
1975 Porsche 914 Wiring Current Flow Diagram (IMG:http://www.914world.com/bbs2/uploads_offsite/i120.photobucket.com-19557-1469248954.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i120.photobucket.com-19557-1469248954.2.jpg) PDF-1 PDF-2 |
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