I am fitting a tow bar to my Yr200, S type SR, 3Ltr petrol automatic and understand that an interface electrical unit is required between the tow bar electrics and car electrics. Can anyone please advise me of the part number, correct name or anything else that would identify the unit. If possible t...

My Yr 2000 S type V6 SE 3.o Ltr petrol auto has deleveloped the following problem. Randomly after driving 4-5 miles when I stop the car it dumps about 1.5Ltrs of water. It appears to be dumped through the expansion bottle. On one occasion this caused the engine to over heat quite rapidly. topping up...