ARB Brushless switch wiring

[4x4TruckLEDs.com]

I understand that you'd want the fuse to be higher than the load, even if using a slow-blow fuse. And that each motor should draw a max of 45A. But am I wrong to think that the connector should at least be rated higher than the fuse? I was under the impression that the fuse is there to protect the wiring (including the connections).

The connector only needs to be rated for the actual power requirements. It's not a fuse. The fuse is what is always slightly higher rated then the load.

A 20 amp connector can handle up to 20 amps of power for example But you might have a 30 amp fuse on it.

In this case a 48amp connector is handling 45 amps of power with a 60 amp fuse.

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[tcovington]

Yes, but the fuse is supposed to protect the circuit. It's really an ARB issue, since they supplied a connector that is right at the limit for the listed current draw. Metri Pack 630 (I incorrectly said 480 previously) connectors are rated to 46A. It just means the fuses aren't really doing what they're supposed to be doing.

 

[4x4TruckLEDs.com]

Yes, but the fuse is supposed to protect the circuit. It's really an ARB issue, since they supplied a connector that is right at the limit for the listed current draw. Metri Pack 630 (I incorrectly said 480 previously) connectors are rated to 46A. It just means the fuses aren't really doing what they're supposed to be doing.

yes they are…

 

[tcovington]

I originally asked the question because I'm about to install the ARB brushless twin and am navigating the wiring. It appears I'll have to extend the power leads a smidge to connect them to my power distribution, so I was looking to re-pin the connectors supplied by ARB rather than use a butt connector that is rated at 48A, which is below the 60A fuse. And then I noticed the connectors are only rated to 46A. I am curious how exactly the fuses doing what they're supposed to do? The fuse is supposed to protect the circuit. If the circuit is drawing, say, 55A, the fuse wouldn't blow but the connector will likely fail. Clearly if there is a significant short in the circuit the fuses will pop. But I'm not sure you should be saying that a fused circuit can have components within that circuit that will fail before the fuse blows.

 

[gbub]

The new brushless do have some technology built in. But there's no draw upon initial power connection.

The same way your truck's relays will click if you re-connect the battery lead.

Thank you

 

[Harleydav91]

Install issues. Please advise.
1. Extension air hose. Female quick disconnect on one end to connect to the pressure gauge on the Morrflate system. How does the other end connect to the compressor?
The extension hose has a Male QD fitting. The chrome fitting will thread in to the compressor output. There should be a Female QD instead of the chrome fitting, to thread in to the compressor?
2. The 2 red power wires will reach my connection point at the battery. The 2 short black wires clearly will not. Do I need to extend them?
3. The 4 wire connections on the same harness, the Red wire attaches to the Upfitter switch?
4. The short, seperate harness with 3 wires at one end,red, blue, and black, and Isolating Switch, Switch 1, and Switch 2, are for lockers, and not used on my Badlands, correct?

 

[4x4TruckLEDs.com]

1. Extension air hose. Female quick disconnect on one end to connect to the pressure gauge on the Morrflate system. How does the other end connect to the compressor? The extension hose has a Male QD fitting. The chrome fitting will thread in to the compressor output. There should be a Female QD instead of the chrome fitting, to thread in to the compressor?

You need to screw in the air hose coupler. It screws into the air outlet on the side of the compressor (where that red cap is). You didn't install it in your photo. Once the air coupler is screwed in, the extension (or any air hose with a standard connector for that matter) plugs right into it.

2. The 2 red power wires will reach my connection point at the battery. The 2 short black wires clearly will not. Do I need to extend them?

They (the black ground wires) get attached to the vehicle's chassis. Not the battery. Find any bolt on the chassis to use as your ground point. The entire vehicle chassis is a ground.

3. The 4 wire connections on the same harness, the Red wire attaches to the Upfitter switch?

Yes the red wire on that 4-wire bundle goes to any upfitter of your choosing.

4. The short, seperate harness with 3 wires at one end,red, blue, and black, and Isolating Switch, Switch 1, and Switch 2, are for lockers, and not used on my Badlands, correct?

The additional wires/adapters provided are not needed unless you plan to install air lockers. For a simple compressor installation see question #3 above.

 

[gbub]

Install issues. Please advise.
1. Extension air hose. Female quick disconnect on one end to connect to the pressure gauge on the Morrflate system. How does the other end connect to the compressor?
The extension hose has a Male QD fitting. The chrome fitting will thread in to the compressor output. There should be a Female QD instead of the chrome fitting, to thread in to the compressor?
2. The 2 red power wires will reach my connection point at the battery. The 2 short black wires clearly will not. Do I need to extend them?
3. The 4 wire connections on the same harness, the Red wire attaches to the Upfitter switch?
4. The short, seperate harness with 3 wires at one end,red, blue, and black, and Isolating Switch, Switch 1, and Switch 2, are for lockers, and not used on my Badlands, correct?

You mentioned 2 red wires going to the battery. There should only be one red wire (the larger diameter one) going to the battery and use the fuse. As 4x4TuckLEDs stated, you do not use the red wire in the three wire bundle unless you have air lockers. Yes, the red wire in the four wire bundle can be attached to the upfitter switch or any switch you desire. It is plenty long for that. I even cut off some of it so I would not have too much excess. I also did not use the Isolating switch. It is not needed but many prefer to have it.

I attached the larger diameter black wire with the loop connector to an existing bolt on the chassis. Make sure it has good electrical contact.

 

[Harleydav91]

There are 2 large red wires with white stripes, one from each of the motor plugs. These appear to go to the 2 connectors on the included (2)60 amp fuses. A bus bar connects the input side of these 2 fuses together, with 1 wire going to the positive battery terminal. The small solid red wire in the 4 wire group can go to the upfitter connection. Is this correct?
2 pics included.

 

[4x4TruckLEDs.com]

There are 2 large red wires with white stripes, one from each of the motor plugs. These appear to go to the 2 connectors on the included (2)60 amp fuses. A bus bar connects the input side of these 2 fuses together, with 1 wire going to the positive battery terminal. The small solid red wire in the 4 wire group can go to the upfitter connection. Is this correct?
2 pics included.

I'd recommend follow the instructions included with the bracket along with the ARB Brushless, which can be found here: https://store.arbusa.com/content/CKBLTA12 INST.pdf

 

[gbub]

There are 2 large red wires with white stripes, one from each of the motor plugs. These appear to go to the 2 connectors on the included (2)60 amp fuses. A bus bar connects the input side of these 2 fuses together, with 1 wire going to the positive battery terminal. The small solid red wire in the 4 wire group can go to the upfitter connection. Is this correct?
2 pics included.

I see you have the double compressor. I did not notice that before. Mine is the single. That must be why we have a different number of large red wires.

 

[Harleydav91]

I have the power connections set up. Where do I connect the red trigger wire. At the bundled connection point at the firewall, or at the fuse box? I want to use the # 1 upfitter switch connection.

 

[4x4TruckLEDs.com]

I have the power connections set up. Where do I connect the red trigger wire. At the bundled connection point at the firewall, or at the fuse box? I want to use the # 1 upfitter switch connection.

That small red wire connects to any upfitter of your choosing.

If you misplaced your instructions a copy of those can be found here: https://kroffroad.com/wp-content/uploads/2024/06/40-1000-Instructions.pdf

ARB Brushless Twin: The main power harness will connect directly to the battery (black to ground/negative and red to positive). Make sure you use the included fuse block in-line with the red power lines. The 2nd (smaller) harness has 4 wires. Connect the red wire to one of your upfitters (you’ll need to cut the spade terminal off and crimp it onto an upfitter wire using the included wire connector in this kit). The remaining 3 wires can be taped back. Any upfitter can be used since the power for the compressor comes from the power harness.

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