fixed air compressor

[mcdoogs]

I like the location of the Owl bracket, its a clever use of that space. I’d rather run the trigger to INT1 and use that to tie to ignition. But then there will be the hole in the bracket where the switch should be which would look crappy, or just put the switch there without wiring it up. Maybe I can rig up a blank for that hole.

 

[Airleader]

My solution:

Post in thread 'Adding a third battery.'

Jan 17, 2025

Found it. Has only a 40 A Fuse, so I take the Littlefuse free port with 300 A and changed the too big M8 bolt to a M6 screw:

From the original INEOS compresso outlet under the rignt rear seat I used only the ingition "+" for the ARB switch (also for the illumination). I used the ARB wiring loom and took the yellow cable from the unused diff lock plug1 for the ignition "+" and connected it to the RED-YEL and BLU-WHT cable at the other end.

• Airleader

Outlet and switch under the rear seats left and right (next weekends work):

 

[ORSO]

The ARB twin should be wired directly to the starter battery. This is because the alternator supplies currently directly to the starter battery and the engine should always be running when using the compressor. It can draw 80amps when under load which is very high current. If it is wired to the auxiliary battery then it is a longer current path as power from the alternator has to first go through the starter battery before reaching the auxiliary via the Ctek combiner. I don't know the position of the starter battery in right hand drive Grenadiers. It is behind the driver in left hand drive versions.

so you don't use the trialmaster's stock wiring that is on the top button panel?

I would like to install an ARB KCMA12 with a small tank and place them on the bisongear roof shelf soon.

I'm not very familiar with electricity so I would need detailed instructions on where and how to connect it.

thanks

 

[mcdoogs]

so you don't use the trialmaster's stock wiring that is on the top button panel?

I would like to install an ARB KCMA12 with a small tank and place them on the bisongear roof shelf soon.

I'm not very familiar with electricity so I would need detailed instructions on where and how to connect it.

thanks

So the power for the compressor aboslutely needs to come from the battery. Each ARB compressor draws 40 amps (so 80 amps for the dual compressor) and those switches are either 10 or 25 amps each. 80 amps is very high draw and you do want the engine running when airing up.

ARB compressors have trigger wires though that control whether the compressor is switched on or not. That can be wired to one of the overhead switches. I used INT1 for my under driver seat installation.