Westwood T1400 fitting new soleniod, ?

tried fitting new one which is slightly different, electrician is looking at it now and needs some help on the wiring side, as it has a cold start cable and needs to know where this attaches, can start engine, but now by key. can any one HELP PLEASE. Old soleniod had 2 large terminals and one small, new soleniod had 4 . 2 large and 2 small. Does anyone have a wiring diagram?