Outer Limits 4x4 Board

Hi all,

I have a Max Air I want to hard wire into my GQ, I've wired up spoties and plenty of UHF's before so not scared (could be a bad thing!). Want to have a crack at it myself.

Can someone give me some guidance on the best way to wire it up? What size wire and fuse and blah, blah, blah?

Thanks!

berett wrote:Hi all,

I have a Max Air I want to hard wire into my GQ, I've wired up spoties and plenty of UHF's before so not scared (could be a bad thing!). Want to have a crack at it myself.

Can someone give me some guidance on the best way to wire it up? What size wire and fuse and blah, blah, blah?

Thanks!

What is its current rating? It should say somewhere on it... 20A, 30A, 15A, whatever.

That's a start!

Jason

Max amp draw is 30, max voltage 13.8.

I want to wire in a pressure switch off the air tank, so it cuts the compressor in and out when it hits say 100psi, anthing difficult about that?

Thanks for the help!

You could use the standard wiring loom already on the Maxair to hook it up to the battery (already has a 40 Amp fuse in it).

Then you'll need to pop the black plastic cover off the end (the one with the on/off switch in it) and you'll find a relay under there. Cut the coil wire to the relay (the on/off switch runs off the relay coil wire) and wire the pressure switch in series with it.

Job done.

Here's what I've done with mine: http://www.outerlimits4x4.com/PHP_Modul ... php?t=8403

Coool! Thanks for the help David, will be into that after work this week!

Didn't realise they had the relay behind the end cap, very handy that being there already!

Put an isolator sw in series too so it doesnt cycle all night and flatten batt

Bazzle

Just wire the relay to either ACC or ON, so when ignition is OFF compressor wont start.

BundyRumandCoke wrote:Just wire the relay to either ACC or ON, so when ignition is OFF compressor wont start.

I would put a bypass switch in it, if you loose a fitting, put a hole in it
or something farks up with it I always want to be able to bypass it so I don't have to get out , open the bonnet and pull the fuse on it

Tom

Thanks for the help people, I have wired it up to a switch on the dash that is straight off the second battery (with 40amp fuse inline), in series with a pressure switch on the tank to the compressor. So I can have it on and keeping the pressure upto 105psi or completely off, I don't need it all the time so this arrangement suits me for the time being. Is there any foreseable dramas with having it wired like this?

berett wrote:Thanks for the help people, I have wired it up to a switch on the dash that is straight off the second battery (with 40amp fuse inline), in series with a pressure switch on the tank to the compressor. So I can have it on and keeping the pressure upto 105psi or completely off, I don't need it all the time so this arrangement suits me for the time being. Is there any foreseable dramas with having it wired like this?

as long your switch is on 85 or 86 on the relay and the fuse is on the
30 or 87 then you should be fine.

Here is a picky to help with the visualization

Tom

berett wrote:Max amp draw is 30, max voltage 13.8.

I want to wire in a pressure switch off the air tank, so it cuts the compressor in and out when it hits say 100psi, anthing difficult about that?

Thanks for the help!

i jus set up a big red into a 80# .
wired it up witha presser switch + air tank ..
to run lockers .
if you would like a wiring diagram e-mail to : tuff4by@dodo.com.au
i use this for my business .
but i could fax it to you ....

Thanks for all the help, gotta get a tank from a wrecker still and make up a bit of bracket for the compressor so it will fit in beside the drawers in the back, should be nice and neat once its all finished!

Am thinking of a change of plans, due to lack of room and possibility of better performance, I am going to look into a compressor of a recent model jap truck, belt operated off the motor. Should get better performance. Not enough space beside drawers and I think it might get too hot in there too. Has anyone had any experience with truck air compressors?

Belt driven truck type compressors work very well but need a bit more work to fit. A truck air compressor pumps constantly and uses a governor to control pressure. The governor either forces opens both valves in the compressor preventing pumping action or directs the compressor output to atmosphere. They also need an oil feed from the engine lube system and also need a way of draining back into the sump. Some also need cyl head cooling via the cooling system as well. I've used single cyl belt driven Merceedes Benz (WABCO) compressors for this application and it worked very well. You need to remove the pulley and use an aircon electric clutch to prevent it running when not in use. They are fairly heavy so they need a good mounting system. There are a few different types that you can use.

Nick