relay, negative out to positive in

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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=101154
Printed Date: May 14, 2024 at 11:28 AM

Topic: relay, negative out to positive in

Posted By: anaxagoras
Subject: relay, negative out to positive in
Date Posted: January 14, 2008 at 2:04 PM

I'm wiring up a compustar cm4000 in my 2000 audi s4.

Though it's taken me a LONG time to do it, i'm almost done.

One thing though. The horn output on the compustar is negative, my horn requires a positive input. I assume I can just take care of this with a relay, but I'm unsure as to how.

So can someone school me in relays 101?

Thanks

Replies:

Posted By: bbtaco
Date Posted: January 14, 2008 at 2:13 PM

Change polarity relay

Posted By: anaxagoras
Date Posted: January 14, 2008 at 2:16 PM

Thanks! search and ye shall find.

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