PackardV8 wrote:
Maybe something like this:http://cgi.ebay.com/Universal-JDM-C-West-Voltage-Stabilizer-Regulator-Blue-/190521090600?pt=Motors_Car_Truck_Parts_Accessories&hash=item2c5bf12228

It expires in about 1 hour. Just something to consider for a universal fit.

If u can determine if the generator is shunt wound or not then maybe a Massey Ferguson (Lucas or Delco) app will work. MF is popular in the UK. I can check my Ferguson manual to determine which Lucas or Delco (one is shunt the other not) regulator would (or should) work.