thanks BENEAGLES, thats been quite an intersting read, and has answered a whole lot of questions for me, especially the point about the stop solenoid and losing power whilst operating the starter moter,do you think a remote starter solenoid would be any good in place of your suggested 4 pin relay, to switch the live feeds,? as i am having that problem now on my 2.5 n/a and the only way i could get round it was to put a on/off switch with a fused battery fed wire to pump solenoid, this works ok and is an anti theft device, but you have to remember to switch it on before starting engine, thanks Pete