Haven't got one but most older caravans have similar appliances. What do you want to know? Post in answer page to your question.
From a net search I came up with this information on ABI ceased making touring caravans in late 90’s, now only manufacture static holiday homes, but still have considerable archive information or they did in 2005 so give them a go they may be able to help point you in the right direction. You will need the chassis/serial number off the plate on caravan. They sold the brand name rights to Swift group.
ABI (UK) Limited ( www.abiuk.co.uk )
Swinemoor Lane,
Beverley,
East Yorkshire,
HU17 0LJ
Tel: 01482 678000
Fax: 01482 887009
Here’s Swifts details too.
Swift Caravans ( www.swiftleasure.co.uk )
Dunswell Road
Cottingham
East Yorkshire
HU16 4JX
01482 847332
Assuming this is correct to date.
The web site doesn't show telephone number this is from my old records save many moons ago.
BB
March 2011