[KevinW]

Thanks Gary.
So if i understand correctly, you are suggesting i attach the key switched +12V to the small terminal as i had previously, and then attaching a solenoid switched 12V feed to the terminal under the blue cap?

I am not sure I understand how feeding 12V to the small terminal helps if the in-built solenoid has failed? Or does it activate the motor windings as well?

'Operating the starter should then allow the pinion to mesh, to check all of the necessary clearances etc.
Don't even think of operating the starter until these measurements are correct.'

I also dont know how to make any measurements without actually spinnng up the starter - the sheet i have suggests i make marks on the output spines to check they mesh with the flywheel when its activated?

Sorry if these are dumb questions, just trying to understand all this. Previously i have used a stock starter, bolted on, and done.