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Posted by: Geezer914 May 30 2012, 05:56 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? Thanks

Posted by: 914Bryan May 30 2012, 08:01 AM

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? Thanks

Posted by: rhodyguy May 30 2012, 08:04 AM

i have a 75' with an unmolested fuse panel. i'll drop it down and post some pictures for you later today.

k

Posted by: ww914 May 30 2012, 08:19 AM

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.

Posted by: Geezer914 May 30 2012, 08:42 AM

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.

Posted by: falconfp2001 May 30 2012, 10:47 AM

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.

Posted by: Geezer914 May 30 2012, 04:26 PM

Wipers work fine. I was having problems with this wire before. Deffinately from the tach & coil.