Wire ARB twin compressor question

[newbtrayback]

Hello! I have been searching how to wire an ARB twin compressor but have not found specific instructions on exactly what to do. I would prefer to leave the switch in the engine bay as I will only be using it for airing up tires. Just uncertain how best to do it . Not certain where to tap the red/yellow and blue/white wires into the right source. Haven't found much on line and a little nervous. I was a bit more bold on the old 80 but this is a much newer/nicer vehicle and don't want to butcher it
Any thoughts is greatly appreciated. Thanks!

 

[jmanscotch]

I just did this so should be able to help out some.

If you’re only running the compressor and no lockers, then wire the on/off switch to the Isolation circuit, and tape up the switch 1 and switch 2 ends.

If you’re putting it under the hood, you don’t need the backlight wires for the switch (blue/white I believe) so you can tape those up as well. If you want the switch to light up, then you’d have to find a power source in the fuse box that is switch with the ignition.

That leaves you with a few basic things to wire and plug in:

- 12V power to the main power leads (large gauge red and large black/white)
- The On/off switch positive and negative trigger wires (tiny red/white and tiny black)
- plug compressor plug into 12V power source side
- pressure sensor (red and blue wires with L shaped slip on spade connectors)
- switch (plug Isolation ends into switch via the diagram in the instructions)
- relay (only goes one way)
- one half of the harness into the other (came unplugged and terminated to be able to fit through firewall)

The large gauge power wires go directly to the battery or power distribution block if you run one.

The switch positive (tiny red/white) is suppose to go to a switched ignition power source so it can only run when the vehicle is started, I ran mine directly to the battery/power source so it’s always on. The switch negative (tiny black) goes straight to battery/power ground.

Compressor power wires plugs into the matching plug in the harness.

Pressure sensor wires (tiny red and tiny blue) don’t have a polarity, so plug both in on either spade of the pressure sensor.

Switch is wired up as the diagram shows (colors to numbered terminals)

Relay can only be plugged in one way.

Half the harness needs plugged into the other half and you have to stab the loose connectors into a blank plug to make that connection, just match the loose side to the already ran side of the connector and you’re good.

 

[newbtrayback]

Thank you jmanscotch that was a big help! I appreciate it

 

[jmanscotch]

Here’s how mine looks with everything contained under the hood. I just realized you said you have the twin, so the main power plug is bigger than mine, but the rest should be the same.

I didn’t hack into any factory wiring, since that’s one of your concerns, just tapped power and the rest is all in the harness that comes with it.

 

[newbtrayback]

Great! Thanks for the pics!

 

[Gx460sd]

If you're leaving the switch in the engine bay it's dead simple to wire it up. You can completely skip the supplied switch harness, the bulk of which is all the stuff you'd need for a locker manifold and thru-firewall setup. Wire the purple and black wires from the switch loom into the switch. It won't illuminate the switch, but that is a good thing if you're leaving it in the engine bay. I used a simple toggle switch instead of the one arb supplied. Here is the male portion of the connector that I used because I didn't want to cut off the connector on the supplied loom.

Amazon product ASIN B07DZ2L4JK

 

[Gx460sd]

I linked but guess mud doesn't like amazon links, if you search "3-Pin Delphi Metri-Pack 150 Series Connector" it'll be at the top of the list

 

[newbtrayback]

Thank you GX460sd. I just ordered it. I think it's better suited for engine bay rather than ARB switch.