i've switched over to the lever style solenoid from the old style ..it came with the bosch 12v relay switch and i had to buy the starter solenoid also.we've got it wired exactly to the instructions and diagrams. we cannot get this thing to work properly.it DOES turn the engine over when we engage the lever but only when we hold a dummy wire from 1 of the terminals of the bosch relay to the battery positive post on the starter solenoid.with the lever NOT engaged..holding that same dummy wire on the same 2 contacts,the lever solenoid just keeps spinning....any helpful replies can be sent to me at hrgrant@shaw.ca