ARB Single Compressor AUX 1 Direct Install Help

[NieR]

Hey everyone, we've recently attempted to install a ARB single compressor CKMA12 and after completing the install, the compressor promptly turned on, ran, and upon shutting off, would not come back on. Running once is adding a whole other layer to "where'd we go wrong."

We can hear the relay clicking (prongs 85/86 putting out about 70 ohms) and power is still coming from Aux 1. We thought it was the pressure failing, have since replaced it, and are a bit stumped on how to proceed.

It is wired directly through the 40AMP Aux 1 and WAGO connectors are utilized throughout. It is ground on the driver side rear cargo panel and the wiring is as followed:

Aux 1 → WAGO Connector with Red Wire going to Relay + Red Wire going to Pressure Switch

Relay Red White Wire → Motor Power

Relay Dark Blue Wire → Pressure Switch

Relay Black + Motor Power Black White Wire → WAGO Connector with Black Wire to ground.

All other wiring has been removed as air lockers nor the ARB switch is being utilized. Any ideas would be appreciated as we've scoured forums and videos looking for any insight and we're stuck.

View attachment 796773

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[roaniecowpony]

Hey everyone, we've recently attempted to install a ARB single compressor CKMA12 and after completing the install, the compressor promptly turned on, ran, and upon shutting off, would not come back on.

We can hear the relay clicking (prongs 85/86 putting out about 70 ohms) and power is still coming from Aux 1. We thought it was the pressure failing, have since replaced it, and are a bit stumped on how to proceed.

It is wired directly through the 40AMP Aux 1 and WAGO connectors are utilized throughout. It is ground on the driver side rear cargo panel and the wiring is as followed:

Aux 1 → WAGO Connector with Red Wire going to Relay + Red Wire going to Pressure Switch

Relay Red White Wire → Motor Power

Relay Dark Blue Wire → Pressure Switch

Relay Black + Motor Power Black White Wire → WAGO Connector with Black Wire to ground.

All other wiring has been removed as air lockers nor the ARB switch is being utilized. Any ideas would be appreciated as we've scoured forums and videos looking for any insight and we're stuck.

View attachment 796773

Can you just disconnect all the logic triggered circuitry and jump it with some pigtails direct to a battery? They are Chinese compressors in the end. So, some infant mortality is not unexpected.

 

[drtrdr85]

Have you watched the video on the banned site? That's how I wired mine when I had a single. Also make sure your options on your aux switches are not on momentary that is found on your radio settings.

 

[AdamNash]

Okay… I realize this might be a really dumb question - please be gentle. Is it possible that the initial run pressurized the system and it’s not running now bc there is no need?

 

[NieR]

Can you just disconnect all the logic triggered circuitry and jump it with some pigtails direct to a battery? They are Chinese compressors in the end. So, some infant mortality is not unexpected.

This made me laugh. I’ll give bypassing everything a shot tomorrow

Have you watched the video on the banned site? That's how I wired mine when I had a single. Also make sure your options on your aux switches are not on momentary that is found on your radio settings.

Unsure of which you’re referring to, but I’ve watched installs and wiring harness trimmings for everything from a bronco to taco so possiblyI think it’s set to latching, but I’ll double check!

Okay… I realize this might be a really dumb question - please be gentle. Is it possible that the initial run pressurized the system and it’s not running now bc there is no need?

Literally had the exact same thought when it first wouldn’t come back on; unfortunately, I’ve definitely depressurized it through removing the pressure switch connected through the t fitting.

Will post back tomorrow with whether it runs with some wiring adjustments to run directly to the motor. Thanks for the input y’all!

 

[BUSHRVN]

Personally would think the Wago connectors are suspect to not be transferring the current well enough possibly. Just my first thought when I read that, especially on a high draw item.
I also have Aux 1 directly feeding a single ARB compressor and haven’t had any issues.

 

[NieR]

Well, a trip to autozone and some spade connectors later and we can’t get the compressor to turn on with only a ground and power directly to the motor. Looks like we may have been troubleshooting a dud.

Personally would think the Wago connectors are suspect to not be transferring the current well enough possibly. Just my first thought when I read that, especially on a high draw item.
I also have Aux 1 directly feeding a single ARB compressor and haven’t had any issues.

I’ll double check the connections, but they’re all rated for 41 amps so they shouldn’t be an issue. Long term, I’ll probably use some butt connectors (didn’t want to do anything harder to disconnect until we were up and running

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