Wiring diagram for a 1979 big block 402.

Hello Everyone, a friend of mine wanted me to ask a question here. He has a boat with a 1979 {?) Chev big block 402 in it. Does anyone here have a wiring diragram for this? Also is there any info that you need, such as distributor type, etc? He said that it has something on it called a '30 amp fuse block'. Thanks ;) Bill

they did not use a 402 bbc in 79? the 30 amp breaker was a reset for the starter wiring i think it been some time it is the main breaker for the engine remote solenoid then from that wired to the starter.