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Join Date: Jan 2018
Posts: 878
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Headlight and wiper realy question
Is this the head light relay. Behind the left head light. Just sorted my seized wiper motor but it works regardless of ign switch position. I believe its fed via this relay. So I want to start there.
Lyndon 
Last edited by Lyndon302; 03-31-2018 at 11:50 PM.. |
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03-31-2018, 11:26 PM
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Kroon Wire Harnesses
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Horn relay
This is the Wherle relay for the horns, used on 65-68 911 and 912's
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04-01-2018, 12:42 AM
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Great thanks. That clears that up. Where will I find the headlight relay ???
Lyndon |
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04-01-2018, 12:43 AM
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Kroon Wire Harnesses
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Headlight relay
The headlight relay is grey (also Wehrle , part number W-598A/S) and located on the left, above the pedal cluster.
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04-01-2018, 12:49 AM
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Great. Will sort it tomorrow. Need to switched power to the wiper motor.
Lyndon |
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04-01-2018, 12:52 AM
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Kroon Wire Harnesses
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The window wiper should be working regardless of the ignition switch, its the red wire on the 4th fuse and always powered.
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04-01-2018, 12:57 AM
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Well that's what its doing. My bad. I just assumed it would be acc and on only via ign switch.
Lyndon |
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04-01-2018, 01:01 AM
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Kroon Wire Harnesses
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I do agree its seems not logical !
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04-01-2018, 01:24 AM
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76 911S Targa
Join Date: Oct 2010
Location: Idaho
Posts: 1,150
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Headlight relay? Unless one was installed by the previous owner the headlights do not switch through a relay. Headlight relays are a good idea. I have them but I had to install them myself aftermarket.
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76 911S, 2.7, Bursch Thermal Reactor Replacements, Smog Pump Removed, Magnecors, Silicone Valve Cover Gaskets, 11 Blade Fan, Carrera Oil Cooler, Turbo Tie Rods. |
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04-01-2018, 08:22 AM
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Eng-o-neer
Join Date: Dec 2011
Location: Los Angeles
Posts: 3,108
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What year/car is this? The later cars don't have headlight relays...I would be surprised to see one on an earlier car.
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04-01-2018, 09:42 AM
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Its a 68. My wiring diagram shows one. My wiper motor is powered thru it. Makes sense as the lights are not ign switch sensitive
Lyndon |
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04-01-2018, 01:29 PM
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Kroon Wire Harnesses
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Headlight relay
Maybe " headlight relay" is not the right word for it, its actually the " lichthupenumshalt relais" or "relay for light signal" (No.43 on the original Porsche diagram)
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04-01-2018, 10:41 PM
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Under the MPH on the Speedo. I have a green light. Is this telling me the lights are on ??
High beam is in the tacho ?? Lyndon |
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04-01-2018, 10:46 PM
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 On the left in the driver's footwell Headlight relay |
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04-03-2018, 11:17 PM
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Carrera 3.2
928
928S 1984
1975 Ferrari Dino 208 GT4
