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Help wiring defrost switch!

Discussion in 'Technical Chat' started by davidpick, Oct 25, 2010.

  1. Oct 25, 2010 at 7:23 AM

    davidpick [OP] NWXPDTN

    Jan 21, 2010
    First Name:
    Snohomish, WA
    2004 Xcab 4x4 TRD
    Hi guys,
    I'm installing some heating elements to heat my mirrors. I've got my wiring pretty much all set up -- running the power from the battery to a relay, tapped into the defrost signal from the existing climate controls to the control the other side of the relay, etc. but I want to put a switch in between the climate control signal and the relay so i can manually override.

    I bought an OEM Toyota defroster switch out of a 1994 4Runner and it has 5 wires coming out of the back. The guy I bought it from knows nothing about it, so I'm a bit in the dark as to which wire is which.

    Here's what I've got (pic below). Any suggestions/tips? Thanks!


    For reference, the front of the switch looks like this. So the little defrost icon lights up when you turn on the headlights/instrument lights and the led on the top turns on when you have the heating elements on.

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