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relay madness

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=135731
Printed Date: May 16, 2024 at 8:37 PM


Topic: relay madness

Posted By: thorzite
Subject: relay madness
Date Posted: January 05, 2014 at 7:36 PM

I am having a similar issue as another person posted on the 3rd. However my situation does not involve auto start. I am installing a Pyle alarm but having issues with the door locks. the alarm door lock outputs are negative (-) but the wiring diag for the truck 01 chevy silverado advises to tap to the wires coming from the body control module, trouble is they are positive outs (+) that said, typically I would go buy two relays, however this truck has a door unlock and a door lock relay, couldn't I tap into the (-) wire off the relay? or would I in fact need two additional relays to run this properly?

Please see attached,

RELAY LOCATION
posted_image

wiring diag
posted_image

wiring locaitons
posted_image

Any help / clarification would be greatly appreciated!



Replies:

Posted By: Ween
Date Posted: January 05, 2014 at 7:54 PM
Hi,
The control of the relays are a positive signal from the door lock/unlock switch and BCM. A way to invert the negative signal from the alarm to a positive signal is needed. Relays are an easy way to do this.
Hope this helps.
M



Posted By: thorzite
Date Posted: January 05, 2014 at 8:23 PM
Very much so, thanks! I obviously need to brush op on my auto electric knowledge. :)


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