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Help with reverse polarity

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=23454
Printed Date: July 21, 2025 at 6:15 PM


Topic: Help with reverse polarity

Posted By: bhog
Subject: Help with reverse polarity
Date Posted: December 27, 2003 at 7:43 PM

Can you reverse polarity on this circut. positive in negitive out?

https://www.the12volt.com/images/latchonoffsp.gif




Replies:

Posted By: HamiltonAudio
Date Posted: January 01, 2004 at 9:01 PM

could u not just add one more relay to do the polarity change?

b




Posted By: japanime83
Date Posted: January 01, 2004 at 9:18 PM

use an npn transistor as a relay it should work just remember to heat sink it!

-kitt


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