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adding a relay for a second accessory

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=100957
Printed Date: October 31, 2024 at 6:27 PM


Topic: adding a relay for a second accessory

Posted By: mrazman
Subject: adding a relay for a second accessory
Date Posted: January 09, 2008 at 12:00 AM

I'm installing an Autopage rs-1000 in my 2005 Hummer H2.  The hummer has 2 accessory power wires and the rs-1000 only has a connection for one.  I have looked for a diagram to connect the other accessory wire with a relay but can't find one, does anyone have this and do I need to use a diode with the relay?

Thanks




Replies:

Posted By: tedmond
Date Posted: January 09, 2008 at 2:56 PM

your unit should ahve a negative out for adding additional acc or ignition wires. if you do have a trigger specifically for acc then wire it up like so.

85 - constant 12v
86 - negative trigger acc from remote start
87 - high current 12v constant fused @ 15 amps
30 - to acc wire on hummer.

incase you dont have wires for addition relays, wire it up like so.

85 - ground out while running (status output)
86 - ignition wire (+) from remote start. tap into this wire
87 - constant 12v fused @ 15 amps
30 - to second acc wire on hummer.





Posted By: mrazman
Date Posted: January 09, 2008 at 3:47 PM

Think I had it backwards...

Should I wire it this way if using the IGN3 that would not normally be used on the hummer?

85 - constant 12v
86 - negative trigger IGN3 from remote start
87 - high current 12v constant fused @ 15 amps
30 - to second acc wire on hummer

diode/no diode?

thanks!





Posted By: tedmond
Date Posted: January 09, 2008 at 8:36 PM
that works too. Well if you want to play it save a 1 amp diode across terminal 85 and 86. Cathode (white band) on 85





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