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Old 02-21-2014, 05:24 PM   #1
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Aux Lighting Relay question

Hello,

My 1995 YJ is a 4.0L 5-Speed SE

I am wiring up some spot lights (windshield) and fog lights (bumper). I will be wiring in a relay. I plan to have the supply for the lights running straight off the battery.

My question is where is a recommend supply wire to tap into for the relay?

Basically the relay is set up like this:
Terminal 30 is wired to the battery
Terminal 87 is going to the lights
Terminal 86 goes to ground
Terminal 85.... What is recommended to tap into???

Thanks For all the help!

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Old 02-21-2014, 05:32 PM   #2
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That would be the power coming from the switch on your dash to activate the relay and make it work.

I have a separate fuse box mounted up under my dash with power supplied to it directly from the battery and then 6 different fused wires coming out of it going to various switches for different items being powered.

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Old 02-21-2014, 06:13 PM   #3
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Quote:
Originally Posted by 0III0forlife View Post
That would be the power coming from the switch on your dash to activate the relay and make it work.

I have a separate fuse box mounted up under my dash with power supplied to it directly from the battery and then 6 different fused wires coming out of it going to various switches for different items being powered.
Okay, Thats definitely very good. I read a few guys in the TJ form that tapped into the fuel pump wire and a few that tapped into the ignition wire. Is that recommended for YJ's?
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Old 02-21-2014, 06:17 PM   #4
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That would be ok if you want them on a "keyed hot" wire. So that they are sure to go off when you shut the key off.

I didn't do it that way on mine because I have other things that the switches run that sometimes are used when the Jeep isn't running.
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Old 02-22-2014, 07:32 AM   #5
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^ Yep.

Really it could be any hot source you want. If you use ignition or fuel those are keyed circuits, and will turn off when you turn the key off. I wanted the ability to run my lights with the ignition off so they are on their own circuit that i wired just for the relay control circuit. You could also tap off of terminal 30, then hit your switch, and then go to terminal 85. Now you are running off of the same battery circuit as the light itself.

No matter what you do, any leads that tap directly off of the battery should be fused, as close to the battery as possible. You can burn your jeep down by shorting out an unfused lead. Ive seen it happen to a Jetta.
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Old 03-01-2014, 10:56 PM   #6
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Okay I've noticed every wiring diagram shows the switch & indicator is before the relay, I would like to place it after the relay so I am only running one wire through the fire wall into the cab. Is there anything wrong with that???


This is what I'd like to do...

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Old 03-05-2014, 07:06 AM   #7
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My relay is right next to my battery. The only wire through the firewall is throne from the switch. Used a fuse tap to power the switch since the relay is a low draw and a 25amp blade type fuse holder between the battery and relay. I'm using a lighted switch in the dash that I have grounded to the dash framework.

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