How to wire tow mirrors

[cool_as_crap]

Does it do it with headlights on? Does your grill corner marker do it too? Wondering if it isn't more of a power draw issue than backfeeding.

Does it with park lights and headlights on. No other lights backfeed. And the weirdest thing is that my test light didn't light up for the opposite side at my mirror connections.

usually that points to a short somewhere. Look for corrosion on wire/contacts and/or a bad earth.

A wire brush and some dielectric grease will be your friend

Could it be corrosion inside the mirrors? That's the only place I haven't checked.

 

[jus10inbrla]

So do you only need one of these boxes ?

 

[jus10inbrla]

It also says no led. Will it still work ? Guess im a little out of touch with exactly how it should be wired in . I have 2 wires coming out of the mirrors now for turn signal. Tap into one from each mirror then just run one clearance wire ? Tie in the 4th to ground ?