[ngagne96]

Trying to redo the wiring on my rancher and run my light bar off of the high beam switch. Anyone have any advice on this. Just got a new wiring harness with a relay and fuse. Where should I be connecting everything. Also want to tap into the accessory wire to only have power when the key is on. Thanks

 

[SamUK]

Download the FSM (factory service manual) for the wiring diagram. Find the word you need and tap into it, without looking I don’t know which wire but it’s quite a straightforward procedure.

 

[TBRider]

I have mine on a seperate switch that is powered directly, so I can turn the light on if needed without the key being on.

 

[wheelsquad]

Trying to redo the wiring on my rancher and run my light bar off of the high beam switch. Anyone have any advice on this. Just got a new wiring harness with a relay and fuse. Where should I be connecting everything. Also want to tap into the accessory wire to only have power when the key is on. Thanks

I did mine just like you are describing with a relay and triggered off the high beam. I just found which wire was at 12v only when high beam was on, and traced back to where I wanted to tap into it.

No need to find a keyed wire to tap into though because your high beans won't turn on with the key off anyway. Just tap into a high beam wire for your relay trigger and your light bar will be keyed.

 

[Goober]

If you tap into the accessory wire and the high beam wire you will blow two fuses.

You also need to know how many amps will be pulling from that circuit

I prefer to switch and power from the accessory circuit.

 

[ngagne96]

Did you keep the fuse that came with the wiring harness or did you cut that out?

 

[OLEJOE's300]

I just put 1 on my 300 and I used a relay wired to the battery with a fuse for the power. Grounded it to the battery also. Tapped into the high beam wire for the power to energize the relay. Even though the relay is always hot, it’s only energized when the key is on and the headlight switch is on high beam. Relay and fuse fit easily in the battery box on my bike.

 

[Goober]

I just put 1 on my 300 and I used a relay wired to the battery with a fuse for the power. Grounded it to the battery also. Tapped into the high beam wire for the power to energize the relay. Even though the relay is always hot, it’s only energized when the key is on and the headlight switch is on high beam. Relay and fuse fit easily in the battery box on my bike.

Yup @ngagne96 this is the best way to do it. Requires minimal amps from high beam circuit to close the relay–then you can power the light bar nearly up to 40A or to whatever the harness fuse is rated.

If you want to calculate your limit, use
Power (Watts) = Inductance (Amps) * Electromotive Force (Volts)
(P=IE)

Divide your light rating in Watts by 12V to get you light draw in Amps