"
(Acc.) position the engine begins to crank, if I turn the key to the start position the engine starts but the starter keeps cranking " Did you mean Run position instead of start?
From the diagram it seems the Yellows may be off. I would disconnect the yellow wire from the starter while checking, to avoid damaging the starter and gear teeth. The radio should be hooked up to R. The starter, DME, etc. should be on 50. Verify with a meter where each wire goes.
