Remote mount compressor in rear of Bronco.

[DREWR13]

I'm looking to run some power wires to the rear of my Bronco and use one of these style connects to power my MAxiTrac air compressor.

What gauge wire do you think I should use and possible routing locations for the wires? Just thinking through this as it would be much more convenient to have the compressor at the back of the Bronco. Anyone done something similar?

Sponsored

 

[kevin.gt]

I’ve read that maxitrac can draw 90 amps and I believe it. mine has melted the solder on the clamps using it in 90 second intervals (per tire separately). I’ve read it might not work as hard when filling up multiple tires at once but I can’t wrap my head around why that’d be.

Assuming 15 or 20 ft of cable? Based on online calculators I wouldn’t go smaller than 4 awg. But since it’s not run continuously, maybe don’t have to be as concerned about cables heating up?

Also curious if you should consider a cut off at the battery. I believe it’s often recommended for winches in case of shorting the wires in an accident.

I recently had great experience with batterycablesusa for cables I needed for winch control box relocation.

following this as I’ve considered the same in the past and interested in other opinions

 

[BAUS67]

I’ve read it might not work as hard when filling up multiple tires at once but I can’t wrap my head around why that’d be.

I'll try and help you out with that..........


It is all about cfm's. A pump only pumps a certain volume of what it is pumping at its operating parameters. A fuel pump works the same way. You can have a fuel pump run at 120psi but only deliver enough fuel to power your Focus (low horsepower). But another pump could run at 80psi and power your Mustang (high horsepower). It is all about volume.

So your compressor can run hot, or it can run a million rpms but if it can only "put out" 15 cfms of air then it will take extra time to fill 4 tires at once. Now if you find a compressor that runs at 100 cfms now you can fill 4 tires faster.


edit: sorry I just realized you said "might NOT work as hard when filling multiple tires" Yeah that does not make sense.

 

[RHeinz]

Looks like 4 AWG as stated above for a round trip run of 40‘ @ 90 amps. If you can run your ground wire to the vehicle frame near the compressor, you can shorten your wire run and can use 6 AWG @ 90 amps @ 20’ wire run. This eliminates the need to run a lengthy ground wire saving some wire cost.

 

[DREWR13]

I do have a 4 tire hose setup and avg time to fill all 4 tires from 15ish to 35 is around 4-5mins with my 37's.

Just hate having to carry everything to the front and hook it up to the battery to then just take it back to the back to store it.

 

[DREWR13]

Looks like 4 AWG as stated above for a round trip run of 40‘ @ 90 amps. If you can run your ground wire to the vehicle frame near the compressor, you can shorten your wire run and can use 6 AWG @ 90 amps @ 20’ wire run. This eliminates the need to run a lengthy ground wire saving some wire cost.

Thank you, this is good info. I will look into solutions for a ground. Do you think it would be better to run the power wire through the cabin or keep it under the vehicle with some kind of protective wrap etc?

 

[Benzo]

I am about to do this as well and it was suggested to me to get 4 gauge 25' jumper cables and use the wire from it. You can also terminate one of the jumper cable ends that you cut off and use it to jump start another vehicle if you leave some length for it. I plan to add both front and rear 12v connections.

 

[Gomezstx]

I’ve read that maxitrac can draw 90 amps and I believe it. mine has melted the solder on the clamps using it in 90 second intervals (per tire separately). I’ve read it might not work as hard when filling up multiple tires at once but I can’t wrap my head around why that’d be.

Assuming 15 or 20 ft of cable? Based on online calculators I wouldn’t go smaller than 4 awg. But since it’s not run continuously, maybe don’t have to be as concerned about cables heating up?

Also curious if you should consider a cut off at the battery. I believe it’s often recommended for winches in case of shorting the wires in an accident.

I recently had great experience with batterycablesusa for cables I needed for winch control box relocation.

following this as I’ve considered the same in the past and interested in other opinions

When filling up one tire at once your are going into a single schrader valve that creates a lot of back pressure on the system. Think of it this way. If you ran your compressor for 5 minutes against a closed end (dead head) that compressor will be seeing a max dead head pressure for those five minutes. Things get very hot. Now run compressor with no hose (wide open) for five minutes. It’s not working as hard. Going into a 4 way tire inflation ssystem effectively approaches that scenario. your going into 4 schrader valves instead of on

 

[kevin.gt]

When filling up one tire at once your are going into a single schrader valve that creates a lot of back pressure on the system. Think of it this way. If you ran your compressor for 5 minutes against a closed end (dead head) that compressor will be seeing a max dead head pressure for those five minutes. Things get very hot. Now run compressor with no hose (wide open) for five minutes. It’s not working as hard. Going into a 4 way tire inflation ssystem effectively approaches that scenario. your going into 4 schrader valves instead of on

Thank you.. good explanation

Sponsored