Tow bar Prep - what is it

[Ex squaddy]

Hi ordered my 70 plate 6.1 with tow bar prep as knew I’d be fitting a tow bar in the future. So it’s that time but haven’t a clue where or what it is, The Van was converted 2 days after I picked it up. I expected there to be a harness you tap into but no idea where it is
Any help appreciated

 

[Deaky]

You’ll already have the wiring back to the rear quarter panel plus a towing module under the driver seat

 

[Ex squaddy]

You’ll already have the wiring back to the rear quarter panel plus a towing module under the driver seat

Many thanks

 

[manfrotto]

There are two connectors in the rear left side quarter panel, and you will just need the cable that goes from them to the plug at the towbar end.
It is model specific, and I got mine from Erich Jaeger. There was a bit of swapping wire between connectors but pretty straight forward.