rear defroster output

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=15655
Printed Date: June 04, 2024 at 10:12 PM

Topic: rear defroster output

Posted By: 80085
Subject: rear defroster output
Date Posted: June 30, 2003 at 11:11 AM

i'm wondering if a relay is required for a rear defroster output (-)? my car's rear defroster button doesn't stay on, so when i remote start in the winter, the snow on my back window won't melt away. or can i just tap straight into the rear window defroster turn-on wire?

Replies:

Posted By: IFlyGC
Date Posted: July 01, 2003 at 7:25 AM

If the defroster switch doesn't stay on then it's powering a relay which holds it on. If you have an extra channel on the remote, you can use that to send a signal to the switch which in turn will trip the relay. Check the polarity before you wire it up!

Dave

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