Which relay to use?
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=143499
Printed Date: May 12, 2025 at 2:25 PM
Topic: Which relay to use?
Posted By: tunedportsierra
Subject: Which relay to use?
Date Posted: August 25, 2017 at 12:55 AM
Okay, I am installing new rear view mirrors on two Pontiac Azteks and my 1989 GMC. The mirrors are from Chrysler Sebrings. I want the map light to come on with the rest of the interior lamps.
The Aztek and GMC have a positive trigger dome lamp circuit.
The Sebring has a negative trigger dome lamp circuit.
I understand I can use a relay but which relay do I use for this and how would I wire it?
Thanks!
Replies:
Posted By: the12volt
Date Posted: August 25, 2017 at 1:51 PM
Posted By: i am an idiot
Date Posted: August 25, 2017 at 4:39 PM
You should not need to convert polarity. You are not using the door trigger system from the other vehicle. Simply find the 2 wires going to the lamp itself and parallel it with the lamps in the vehicle.
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