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timmy2 timmy2 is offline
ROW '78 911 Targa
 
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Join Date: Jul 2011
Location: Salem, OR
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Quote:
Originally Posted by Brunoz28 View Post
I checked the 14 pin connector as recommended. There was no power on 5 & 6 on the female side; the male side only had power on 5 nothing on 6. I tried to bridge 5 male and 5 female assuming at least one side's reverse lamp would work. It did not.



I checked the fuse for the green and yellow wires there is a thicker one that only comes on when the headlamps are on. The thinner green and yellow wire has power with the ignition on.

Ok I think you missed the context of the circuitry test.

Put a small jumper from pin 5 to pin 6 of the male connector only. When you turn on the ignition the reverse lamps should light.

Think of it this way, power for the lamps comes from the fuse box on the green yellow wire to pin 5 of the male 14 pin connector. It then goes through the engine harness on pin 5 female 14 pin connector to the switch. When you close the switch the power then goes through the grey/brown wire to pin 6 of the female connector. From there it goes to pin6 of the male connector to both of the reverse lamp filaments and through the lamps to ground.
When the female 14 pin connector is disconnected there is no longer a path for power to reach the lamps.

Let me know if this makes sense. I have a first year electrician apprentice in my shop so explaining wiring and power/voltage flow is something I have to do a lot.




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Dennis
Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C
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Old 09-02-2014, 06:29 PM
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