heated mirrors, what relay should i use?

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dan 2002 f250

Member - Posts: 1

Joined: December 05, 2011

Location: Oregon, United States

Posted: December 05, 2011 at 4:32 PM / IP Logged

I have a 2002 f250. im putting in heated mirrors from a 2005, i have run all the wires and have the drivers side working, powered by a toggle switch in the dash. I need to hook up the pass side and I believe i need a relay? A SPDT will work, but im not sure why I will have 87a, an unused wire, hot when the mirrors are not turned on. Any advice would be appreciated.

Dan

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: December 05, 2011 at 6:21 PM / IP Logged

If you run your power source to 87 rather than 30, then 87a won't be live and even if it was it won't draw any juice if not connected.

Or use a 4 pin relay.

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heated mirrors, what relay should i use?

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