Hi all,

This is a cross-post from AULRO that I'm posting on here to (hopefully) get a bigger audience for a response.

So I'm almost ready to take my latest pride and joy out for her first 4wd experience and someone mentioned to me the topic of tyre inflator. To be honest I hadn't given it a second thought because in my Defender I had one hard-wired and had completely forgotten about it in my 2010 L322.

So can I connect a 12v tyre inflator to the battery of the L322? I'm more than a little cautious (justifiably so I believe) when it comes to connecting anything to the L322's electrical system as I don't understand it fully yet.

I've tried searching on various forums and google but my searching keep coming back to air suspension compressors

Thanks!

I use auxiliary power outlet in the boot to inflate spare tire with no problems. 2012 TDV8 Black Edition
2000 Disco. TD5
1975 series III

The rear Aux socket is a convenient point for plugging a tyre inflator in, but I think is limited to 20A.

20A is I think fine for most if not all of the single piston inflaters, but won't be adequate for some of the really fast twin piston inflaters.

On my Disco 2, the twin piston inflater I use takes 35A, so has be connected direct to the battery terminals with crocodile clips.
It's great at pumping up the tyres in a few minutes from the 22psi used for off- roading back to the 35 psi for road use.

Coupling direct to the battery or "jump point" of the RR should be fine. Paul,
2001 Discovery 2 TD5, 211,000 miles & climbing
2006 FFRR TDV8 Vogue 151,000 miles & now sold
Member of Midland (Land) Rover Owners Club, www.mroc.co.uk

The Aux socket in the boot is ok to use, but you have to keep the engine running as it's linked to the timing shut down on the computers?

Thanks for all the responses folks, much appreciated

I presume you will be airing down and up dependent on track conditions hence the question. I have never had an issue connecting an air compressor direct to the battery, earth to body poss to the Aux terminal on the bulkhead, keeping the engine running whilst using the compressor for long periods. You might think of adding a second battery to the rear and connect via a cheap voltage sensing relay to the existing heavy Poss cable feeding the rear fusebox. If you rewire the rear aux outlet direct to the second battery it takes away any chance of flattening the main. 2007 TDV8 VSE
2003 TD6 gone.
2002 P38a gone
1999 P38a gone
1997 p38a gone
1993 VSE gone
1992 VSE gone
1966 Series 2a with V8 conversion gone

Yeah that's the idea. I've got the Defender set up with all that kit but not the RR yet, a second battery is definitely on the list of things to add