Relay for 2nd Starter

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=75796
Printed Date: May 19, 2024 at 3:16 AM

Topic: Relay for 2nd Starter

Posted By: jesztir
Subject: Relay for 2nd Starter
Date Posted: April 06, 2006 at 6:25 PM

Viper 791XV & 2005 Pathfinder

I'm trying to wire the 2nd starter using the small guage purple wire coming from the XCRS and a relay to supply +12 to the 2nd starter circuit during remote start. I don't want to just solder it to the motor side starter wire.

Question is...I'm not sure how to wire the relay from the small purple wire. I know it shows constant +12 except for when starting, then it drops to zero. Do I use a Negative Input-Postive Output as shown in this diagram?

All other functions of alarm work perfectly and I live in Hawaii where it never gets below 65F but...anything worth doing is worth doing right!

Thanks --- J-Dub

Replies:

Posted By: Twelvoltz
Date Posted: April 06, 2006 at 6:53 PM

Yes, you would use that part of the diagram.

Posted By: jesztir
Date Posted: April 06, 2006 at 7:02 PM

Also...not sure why but if I ground that wire with the ignition on, it starts the car. Is that normall?

Posted By: jesztir
Date Posted: April 06, 2006 at 7:22 PM

Twelvoltz wrote:

Yes, you would use that part of the diagram.

One more thing. Using the Negative Input - Positive Output would send +12 back through the small purple wire to the XCRS. Is that OK?

Posted By: Twelvoltz
Date Posted: April 06, 2006 at 9:32 PM

The car starting with the key on when grounding that wire is normal. That wire provides a ground to a relay in the pack that powers the starter wire, if you ground it, it will crank the starter, and if the key is on, it will start.

That diagram would not send +12V through the small purple. The small purple is a negative trigger to activate the relay to supply +12V during the start sequence. It will not see +12V at all if wired correctly.

Posted By: jesztir
Date Posted: April 06, 2006 at 10:23 PM

I appreciate all the help. Got it wired up and all is as it sholud be.

J-Dub

Posted By: feenal
Date Posted: April 08, 2006 at 7:01 PM

this second starter wire seems to be a common problem, I know I had trouble my first time with it on the nissan's...maybe someone should make a sticky on this or is there already one i never even checked....I know the search for this one brings lots of discussion's