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850 Headlight Wiper Relay


Kevin.

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I recently bought and installed 2 headlight wiper motors. Neither of them are working, but I suspect that my headlight wiper relay is toast. Where is the relay at so I can run a voltmeter on it? Is it up with some other relays in the front of the engine bay on top of the fan?

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It is within the relay box under the dash, by the driver's brake pedal (look up). It is labled 203 if I remember carefully, and its at the top, so you have to remove a few relays to get to it. On my S70 it is a red relay. If you still need instructions, look on iPd's webpage for the adjustable intermittant wiper relay (under S70/850) and they also have instructions how to get to the relay.

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Which fuse goes to the headlight wipers?

Well, it will say on the panel when you take it off, but if I remember correctly, the fuse is also for the horns. Hmm...

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Well, it will say on the panel when you take it off, but if I remember correctly, the fuse is also for the horns. Hmm...

Yea, the fuse runs both the horns and the headlight wipers.

So this leaves me with 3 options:

-relay is dead

-used motors are dead

-wiring going to motors is dead

I'm assuming that the relay is dead since I was told the wiper motors worked. Gotta send MyCarlsRed a PM and have him ship me my goodies :)

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  • 3 weeks later...

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