40" and 30" light bar on switch #1?

[BigBOSS]

So by run it on a relay, you mean use a separate switch? Or run a positive wire from the relay and tie that wire into the Aux 1 switch?

Tie the relay into the aux switch so you fry the relay if anything is going to fry.

Sent from my SAMSUNG-SGH-I337 using Tapatalk

 

[SFD]

He means battery power to the relay (adequately rated) & a s/w to control it. Any of the 4 switches will work because the relay will only require a couple amps. Use s/w 4 & save 1&2 for a direct load.

Edit: you will need to fuse the battery power wire to protect the relay, try a 30amp or 35.

 

[Nick@Apollo-Optics]

So the positive and negative go from the bar to the relay. Then out of the relay I take the wire that would go to the ring terminal on the battery and tap that to Aux 1 and then ground the negative wire. Correct?

 

[NickPic83]

hope this helps

 

[The Car Stereo Company]

no. the negative goes straight to ground. only the power has to go to the relay.

 

[Nick@Apollo-Optics]

So if Aux 1 provides power, do I need to hook the relay to the battery? Or do I hook up the "switch" wire out out of the relay to Aux 1 for power and turn on? Or do I wire to the battery and just tap the switch into Aux 4?

 

[Harblar]

Yes. Both the power from the switch and the power from the battery need to be hooked to the relay. That's the point. The power state of the aux switch just tells the relay whether to apply power from the battery to the light or not.

A relay is just a remote switch for a high current circuit that can be activated by a separate small current circuit.

 

[Nick@Apollo-Optics]

Yes. Both the power from the switch and the power from the battery need to be hooked to the relay. That's the point. The power state of the aux switch just tells the relay whether to apply power from the battery to the light or not.

A relay is just a remote switch for a high current circuit that can be activated by a separate small current circuit.

Gotcha. Thanks!

 

[BigBOSS]

Yes. Both the power from the switch and the power from the battery need to be hooked to the relay. That's the point. The power state of the aux switch just tells the relay whether to apply power from the battery to the light or not.

A relay is just a remote switch for a high current circuit that can be activated by a separate small current circuit.

100% correct!

 

[Nick@Apollo-Optics]

Last question, the ground and blue wires that go to the switch in the cab that would normally connect to the wiring harness switch, but not being used since I'm using the AUX 1 switch, what do I do with those?