KC Lights Wiring assistance

Kevgund · May 21, 2019

Hey All.. I am looking for some easy to understand assistance with wiring up my KC Hilites KCL-151 Halogen lights to a switch system. In my case I have the Rough Country MLC-6 switch, which is basically exactly like an Spod, having built-in relays and fuses. I am including the wiring diagram that came with the lights below.

I called KC to ask for assistance and all they said I needed to hook up was the Load (green) wire and the ground to my switch and it will work, well it did not work. I even tried hooking up the yellow and ground to my battery and that also did not work. My last attempt I tried also hooking in the Supply(white) wire to the battery and with the green on my switch. The lights came on but were not controllable by my switch.

Does anyone have any knowledge of this that could help me out with wiring these lights?

I appreciate any assistance, thank you.

Kevin

Sharkey · May 21, 2019

I’ve never grounded lights to a relay. I ground the lights directly to the Jeep. The only connection between the relay and the lights is the power from the relay.

WJCO · May 21, 2019

Sharkey said:
I’ve never grounded lights to a relay. I ground the lights directly to the Jeep.

^ Yep. This.

BaddestCross · May 21, 2019

Sharkey said:
I’ve never grounded lights to a relay. I ground the lights directly to the Jeep. The only connection between the relay and the lights is the power from the relay.

A switched ground instead of hot is theoretically safer in an automotive application, but none of the switch panels sold are designed that way.

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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

Snboarder113 · May 21, 2019

You will need three connections if youre using the relay that comes with it. Yellow to battery, black to Jeep ground as stated above, and green to your switching system.

OverlanderJK · May 21, 2019

Sharkey said:
I’ve never grounded lights to a relay. I ground the lights directly to the Jeep. The only connection between the relay and the lights is the power from the relay.

Whatever he says. He does my wiring via text message.

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BaddestCross · May 21, 2019

You're overthinking this. The switch box is your relay. There should be a numbered switched and ground leg that corresponds to what switch in the cab you want to use to activate the lights. The 2 wires from the KC lights go to those. Done.

That's why you buy the switch panel in the first place. It eliminates the diagram you posted.

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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

Kevgund · May 21, 2019

BaddestCross said:
You're overthinking this. The switch box is your relay. There should be a numbered switched and ground leg that corresponds to what switch in the cab you want to use to activate the lights. The 2 wires from the KC lights go to those. Done.

That's why you buy the switch panel in the first place. It eliminates the diagram you posted.

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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

That's what the guy at KC said.. he told me to use the green load wire as nd black ground so I did and it did not work.

Should I be using the yellow instead?

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Snboarder113 · May 21, 2019

Kevgund said:
That's what the guy at KC said.. he told me to use the green load wire as nd black ground so I did and it did not work.

Should I be using the yellow instead?

Sent from my SM-N950U using Tapatalk

I think you misunderstood, If you want to use only your switch system with built in relay. Slice the wires coming from the lights, positive wire goes to the switch system ground goes to ground. And you throw the rest of the unnecessary crap away.

Cut at the red line. Trash the yellow circle.

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BaddestCross · May 21, 2019

Kevgund said:
That's what the guy at KC said.. he told me to use the green load wire as nd black ground so I did and it did not work.

Should I be using the yellow instead?

Sent from my SM-N950U using Tapatalk

Snboarder113 said:
I think you misunderstood, If you want to use only your switch system with built in relay. Slice the wires coming from the lights, positive wire goes to the switch system ground goes to ground. And you throw the rest of the unnecessary crap away.

Cut at the red line. Trash the yellow circle.
View attachment 327413

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This.

Everything in the yellow circle is unneeded if you're using a switch panel. You wire the lights directly to it without any of the extra stuff.

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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

Kevgund · May 22, 2019

Snboarder113 said:
I think you misunderstood, If you want to use only your switch system with built in relay. Slice the wires coming from the lights, positive wire goes to the switch system ground goes to ground. And you throw the rest of the unnecessary crap away.

Cut at the red line. Trash the yellow circle.
View attachment 327413

Sent from my iPhone using WAYALIFE mobile app

Thank you man.. that worked perfectly.

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Snboarder113 · May 22, 2019

Kevgund said:
Thank you man.. that worked perfectly.

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glad you got it figured out

BaddestCross · May 22, 2019

Kevgund said:
Thank you man.. that worked perfectly.

Sent from my SM-N950U using Tapatalk

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Build Thread - Adventures of Fiona - https://wayalife.com/showthread.php?t=47407

KC Lights Wiring assistance

Kevgund

Member

Sharkey

Word Ninja

WJCO

Meme King

BaddestCross

Active Member

Snboarder113

Hooked

OverlanderJK

Resident Smartass

BaddestCross

Active Member

Kevgund

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Snboarder113

Hooked

BaddestCross

Active Member

Kevgund

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Snboarder113

Hooked

BaddestCross

Active Member