hello I am installing a 99 mercruiser 525 sc in a 1989 formula 242 l went to plug my male end of the boats wiring harness into the engine and it will not fit my local dealer who was to busy to elaborate told me to break off pin # 4 and he thinks it will work then he commented he was to busy to say anything else. Dose anyone know if this is right if so what did this pin do that is now not needed ? or will something not work ? or is there other things that need to be addressed ? dose anyone have wiring diagrams ?
any help would be appreciated thanks ,Michael