Heated Seat/ Rear Defrost with 2-way
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=41981
Printed Date: July 05, 2025 at 10:55 AM
Topic: Heated Seat/ Rear Defrost with 2-way
Posted By: MrFleming007
Subject: Heated Seat/ Rear Defrost with 2-way
Date Posted: October 31, 2004 at 2:44 PM
This is for a 2002 Avalanche I've got the Audiovox 996a remote start system installed on this truck, and it works GREAT. I would like to tap one of the Aux circuits and use it to remotly turn on the drivers side heated seat and rear window/ mirror defrost (after the vehicle has been remote started). Has anybody here accomplished this, or maybe have a wiring diagram for these systems? On this vehicle I can't just leave the switches set to "on", as they are a momentary type and reset each time the vehicle is turned off. Thanks in advance for the help! -Owen
Replies:
Posted By: SEXIFIED
Date Posted: November 01, 2004 at 9:20 AM
you need to figure out what kind of trigger both the switches need, if a (-)negative trigger pulse turns the seats and the rear defogger on then diode isolate the lock wire and program it to lock after start up. this will provide the trigger, i suggest you use a relay to boost the output, 200milliamps isn't sufficient.
now if it is a (+)positive trigger you can do it the same way exept now you need to isolate it from the switch completely so you don't burn the switch out.
i think that the seats should be able to be triggered but the rear defrost could be tricky.
good luck, i hope i helped out a bit.
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SWEET.
Posted By: SEXIFIED
Date Posted: November 01, 2004 at 9:22 AM
i forgot to mention that you will need one or more latching relays thats what is going to supply the output while whe truck runs, otherwise it will only be a pulse.
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SWEET.
Posted By: FairWeather
Date Posted: November 02, 2004 at 10:26 PM
I hooked up the heated seats on my 04 tahoe through an auxiliary that gives a 250 ma (-) pulse. I had to reverse the polarity and send the wire directly to the switch module (not the standard door module but the module that has the heated seat switch in it). If you figure out the mirrors and rear defrost, please let me know. I want to do it on my Tahoe too.
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You can do it!
Posted By: FairWeather
Date Posted: November 02, 2004 at 10:29 PM
Oh yeah, the reason I picked up the wire directly at the switch is because the switch on the Tahoe only sent out a + pulse. I didn't have to use a latching relay to keep current flowing. Anyway, I can't imagine the Avalanche and Tahoe being different on the heated seat switch.
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You can do it!
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