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TOPIC: 84' headlight issue

84' headlight issue 11 Jul 2018 13:54 #20526


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I finally decided to tackle my stripped headlight motor issue on my 1984 928s. I bought a new (used) motor and gearbox for my car, but looking back it said "1979-1983" on the shipping box. It appears identical even on the little inside disc that tells it when to stop retracting and going up.

After replacing my broken headlight relay, I now have this issue - the headlights go up and turn "on", but then they stay up and "on" after turning the switch off. If I turn the key "on", they go up and down as they should but still stay illuminated. Only by removing the relay can I get them to turn off.

I have the 4 wires attached on the motor's plugs 1,2,3,4 as "white, orange, yellow, red". Can anyone look at theirs and see if that is correct for my 84?

Any ideas as to why having the key on changes the operation? Is it maybe that I used the motor from a 79-83? I believe there are 3 different relays that have been used throughout the years but I don't know if the motor or disc changed. Thanks!!!
Last Edit: 11 Jul 2018 13:55 by schuette928. Reason: Added year
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84' headlight issue 13 Jul 2018 18:16 #20529


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I cannot comment on the difference in the parts between the years, however it would be best to find and install the exact part number specific for the year of your Porsche 928.

On my older 928s, up through my 1987 928 S4, if the headlamps are on with the ignition on, and then the ignition switch is turned off, the headlamps will stay up. The headlamps retract if the light switch was off as soon as the ignition switch is turned on again (and the light switch remains off). I think my GTS headlamps retract regardless of the ignition switch being turned on or off.
Rich
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1993 928 GTS Cover Girl
1987 928 S4
1979 928 5-speed rescue
1979 928 5-liter track beast
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84' headlight issue 17 Jul 2018 16:33 #20536


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I hope by now you have solved the problem. If not I have a C/D that has everything you would want to know about your 928. I would be happy to mail you the C/D if yu promise to send it back when you solve your problems.
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