Complex Switch Setup?
Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=139939
Printed Date: April 29, 2024 at 1:34 AM
Topic: Complex Switch Setup?
Posted By: andeyhall
Subject: Complex Switch Setup?
Date Posted: December 13, 2015 at 12:58 AM
Alright so this is for my patrol car...I have a light bar on top of my car with 2 separate switches for front and rears, I have a light bar in the dash up front with a separate switch, and a light bar in the rear deck with a separate switch. I want to have each light on their separate switches, but I also want a "master" switch that will cut all the lights on with just one switch. How do I do that without having power back-feeding to each light?
Replies:
Posted By: i am an idiot
Date Posted: December 13, 2015 at 4:08 AM
Do the current switches power the lights directly, or do they trigger a relay? If they trigger a relay, do they switch ground or positive voltage to the relay? But to answer your question, 2 diodes.
Posted By: andeyhall
Date Posted: December 13, 2015 at 4:26 AM
i am an idiot wrote:
Do the current switches power the lights directly, or do they trigger a relay? If they trigger a relay, do they switch ground or positive voltage to the relay? But to answer your question, 2 diodes.
They power the lights directly. But what type of diodes exactly and how would I wire it up?
Posted By: i am an idiot
Date Posted: December 14, 2015 at 9:37 AM
If they powered a relay you could use 1n4001 diodes. Since the switches power the lamps directly you will need to use 2 relays.
Ground to 85 of both relays. Wire direct from battery via a fuse to 30 on both relays. 87 of one relay to the power wire of the front lights. 87 of the other relay to power wire of the rear lamps. Power from the output of your new switch to 86 of both relays.
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