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Posted by: Jasfsmith Apr 28 2014, 07:16 AM

I'm attempting to assist the installation of a rear window with heating element. I have traced the lead to install a switch to control the heat defroster relay however cannot locate where the wire to the defroster exists the harness from the relay board. Anyone know where I can locate it? Also how/where was the wiring run to the rear window.

Posted by: iamchappy Apr 28 2014, 07:39 AM

As i remember it, the rear window defroster has it's own separate wiring harness and 2 prong connector that plugs into the relay board. I think the wires of the harness are green and brown or green and white....

Posted by: Jasfsmith Apr 28 2014, 08:02 AM

The wiring diagram that I have shows a lead (no. 7) from the relay board, going into the wiring harness, and ultimately to rear window defroster. The lead is there (green), I just don't know where it exits the harness.

Posted by: toolguy Apr 28 2014, 11:03 AM

The leads are adjacent to the inside light leads under the backpad

Posted by: iamchappy Apr 28 2014, 11:05 AM

Yes behind the back pad like he said...

Posted by: Jasfsmith Apr 28 2014, 11:11 AM

Thank you!

Posted by: r_towle Apr 28 2014, 12:33 PM

powered by the other fuse on the relay panel.

Rich

Posted by: Qarl Apr 28 2014, 12:43 PM

Has anyone powered the rear defroster on a conversion with the relay board removed?

I guess you can add your own separate relay and a lead to power?

Any idea on the current draw?

Posted by: iamchappy Apr 28 2014, 12:46 PM

The scoop on the rear window defroster is in all my years driving a 914 in Minnesota it was never needed...