 Chasing a short blowing fuse 7 |
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| Geezer914 |
 May 30 2012, 05:56 AM
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#1
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Geezer914  Group: Members Posts: 1,418 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States 
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 This is on a 75 914. I have found the wire causing the short blowing fuse 7. It is on the back of the headlight switch on post 56b. There are 3 black/blue stripe wires and 1 black/purple stripe wire connected together. It is the black/purple stripe wire on the far right. I can't find it on the circut diagram to see what it goes to????? Can anyone help? Thanks |
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Replies(1 - 6)
| 914Bryan |
May 30 2012, 08:01 AM
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#2
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Member Group: Members Posts: 190 Joined: 6-June 11 From: Orange County Member No.: 13,162 Region Association: Southern California |
QUOTE(Geezer914 @ May 30 2012, 04:56 AM)  This is on a 75 914. I have found the wire causing the short blowing fuse 7. It is on the back of the headlight switch on post 56b. There are 3 black/blue stripe wires and 1 black/purple stripe wire connected together. It is the black/purple stripe wire on the far right. I can't find it on the circut diagram to see what it goes to????? Can anyone help? ThanksHit up Jeff Blowsby.. He knows the electronics of these cars better than anyone.. He helped me with my 74. |
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| rhodyguy |
May 30 2012, 08:04 AM
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#3
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,080 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
i have a 75' with an unmolested fuse panel. i'll drop it down and post some pictures for you later today.
k |
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| ww914 |
May 30 2012, 08:19 AM
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#4
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914 Convert Group: Members Posts: 435 Joined: 29-September 11 From: Central Coast, CA Member No.: 13,621 Region Association: Central California |
Here's what I have found so far:
Counting from the left, the #7 fuse is the license plate light, however the book shows it being fed with a GY wire from post K. I cannot find a post 56b on my diagram, nor can I find any BK/PU wire on the headlight switch for a 75. The only BK/PU wire I could find is one going to the windshield wiper. For that matter I cannot find any BK/Bl wires coming from the headlight switch. Sorry, not much help here. |
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| Geezer914 |
May 30 2012, 08:42 AM
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#5
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Geezer914 Group: Members Posts: 1,418 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States
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Dr. 914 chimed in on the other site. It is comming from the coil giong to the tach and heater temp light? I had a problem with the tach wire shorting out the coil, also blach/purple stripe, so bypassed the black/ purple stripe wire and ran a new wire from the coil to the tach. I had no idea the same wire was hooked up to the headlight switch and would cause other problems. Wierd! Disconected the black/purple wire and reconected the 3 black/blue wires to the headlight switch. The tach is working, but no dash lights. Fuse 7 is no longer blowing out. Pulled the dash and the black/purple stripe wire goes to all the dash lights. None of the dash light terminals are insulated, so one must be touching the metal on the dash and causing a short. I used some 1/4" shrink tubing and covered all the bare terminals. Dash lights are back on. All is good.
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| falconfp2001 |
May 30 2012, 10:47 AM
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#6
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Pancho Pantera Group: Members Posts: 451 Joined: 5-December 10 From: Downey, CA Member No.: 12,456 Region Association: Southwest Region |
I was gonna chime in with that also. You do realize that there are two Black with purple wires behind the dash?
1. (-) from coil to tack 2. +12v from wiper switch to wiper motor Someone who is color blind could have mixed up the wires but that would be the only cause I could think of. |
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| Geezer914 |
May 30 2012, 04:26 PM
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#7
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Geezer914 Group: Members Posts: 1,418 Joined: 18-March 09 From: Salem, NJ Member No.: 10,179 Region Association: North East States
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Wipers work fine. I was having problems with this wire before. Deffinately from the tach & coil.
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