On the basis that the kerbweight is around 1400-1500kg, you can tow up to around 1000-1200 (braked) Towbars
"I've used my CR21 2.0TD auto to pull a Raclet trailer tent (about 500 kg) - it will do it but doesn't pull very willingly up hills."
"I regularly pull a 1.5 tonne twin axle trailer (loaded up to 1 tonne auw) with no problems (apart from the hills)."
You should consider getting a transmission oil cooler fitted if you plan on lots of towing (any auto box specialist should be able to help) - it can be a bit disastrous if the trans fluid overheats. Website with links for towbar suppliers.
Towbar Liteace: Bink, part number 1488
Jap models don't have mounting points.
Watling Engineers in St.Albans (01727 873661) make them to fit Townies.
Sussex Towing Brackets 01903 216215 fit at home.
Barnsley Towbar Centre. Towbar fitted to townace for £184. Tel: 0800 0351152

Where to tap off power for the AUX' Socket ? Probably the fuseable links at the side of the battery. The wiring to the cig. lighters is a bit thin for a fridge. Or the glow plug relay above the fuel filter?