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914World.com _ 914World Garage _ Couple electrical gremlins

Posted by: MrHyde Sep 30 2013, 02:36 PM

I have a couple gremlins I'm trying to sort out and thought I would post it up here...
Most of everything is working just fine, headlights/motors are working much better than they did in the parts car. I imagine thats because theres actual metal around the ground points..

Anyways heres what I got

1: Turn signals.. with headlights off left and right turn signals work just fine as do the 4-ways. With headlights on only the left turn signal works. right does nothing. no click, nothing.

2: trunk light and license plate lights are getting no power. This is coming off of fuse 7 along with the gauge lights which are working just fine and dimming when the knob is turned. I think this one might be a simple wire broken but I'm not sure yet. All I know is that I have no power when checked at the trunk light and ground..

Posted by: Dave_Darling Sep 30 2013, 03:18 PM

1- Could be the flasher relay. Not sure exactly how you'd test it, though.

2- There is a gray wire that goes through the main wiring harness and powers the engine bay light/rear trunk light and the license plate lights. In 74+ cars, it is hooked to the black/blue wire that powers the center console instrument lights. The connection is a little different in 73 and earlier cars, I think. Check connectivity on that wire. You may find it bundled up alongside the main harness in the center tunnel.

What year is this 914?

--DD

Posted by: MrHyde Sep 30 2013, 03:25 PM

The harness is from my 73 parts car. There is a grey wire that comes off of fuse 7 along with the black/blue wire. The wires at the trunk and license plate are also grey.

Posted by: kg6dxn Sep 30 2013, 06:30 PM

#1 is a bad ground. With the lights off, the turn signals are pulling ground through the parking lamp. Lights on, ground goes away. This could also be caused by a bad lamp socket, pulling ground through the parking lamp. Check the front and rear lamp sockets first. Then clean the ground connections.

Posted by: MrHyde Sep 30 2013, 07:56 PM

All the ground connections were cleaned back to bare metal with new nuts on the ground studs too. I notices that the bulbs the selfs are corroded. I'll clean the lamp sockets tomorrow and try again

Posted by: MrHyde Oct 1 2013, 02:46 PM

Turn signals fixed.

I went around the car and double checked the ground points. and everything was clean and tight. So I started pulling the light bulbs and checking the sockets for corrosion and loose wires at the lamps. I found two things. 1: The right side turn signal was only a single filiment bulb when it should be a double. Changed the bulb and bingo, the signals work when the headlights/parking lights are on. 2: I also noticed that the brake/marker lights in the back were flashing (dimly) along with the left turn signal. Also the front left marker light was flashing and it shouldn't be. turns out I was looking at the tail lamp upside down or something when I hooked it up and had the ground and one other wire switched. switched them back and all is good now.

Now I'm working on running a new line for the trunk light/license plate lights. The wire itself is broken/frayed near the trunk light.

Posted by: MrHyde Oct 2 2013, 01:55 PM

New light ran for the trunk light and license plate bulbs.. everything works now. :-)