reverse/auxillary lights relays
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=135968
Printed Date: May 04, 2024 at 11:43 AM
Topic: reverse/auxillary lights relays
Posted By: grdrc1963
Subject: reverse/auxillary lights relays
Date Posted: February 01, 2014 at 9:13 AM
Hello all.
This question as probably been answered many times but have not been able to find a clear cut answer.
I need the aux. lights to come on automatically with the factory reverse light signal. This step is easy with a 4 pole relay alone.
I also need the aux. lights to be controlled by a switch in the cab by themselves when not in reverse. Also easy with a 4 pole relay alone.
But combining the two seems to be beyond me. The aux. lights will have their own 25 amp 12v power line. All wiring has been completed except connecting the relays. Have both 4 and 5 pole relays in the shop.
Thanks for your help.
-------------
Cappy
Over the road 2006 Ram 3500
400,000 miles and counting
Replies:
Posted By: oldspark
Date Posted: February 01, 2014 at 11:58 AM
Just one SPST relay and 2 diodes (1N400x).
Reverse & cab switch each thru their own diode with their line ends joined relay 86. 85 to GND.
30 & 87 between the fused aux light supply (battery +12V or IGN) and the aux light.
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