4.3 Tahoe starter won't ingage and fuel doesn't prime when trying to start the boat

by Joe Daniels
(Lowell, Ar. USA)

I'm helping a friend work on his 215 Tahoe boat it won't turn over when we try to start it. My boat with the same engine when you turn the switch on you can here the fuel pump priming , but on his nothing. I've tried taking the key switch off my boat which is the same and still nothing. The horn, lights and everything else will come on when the Acc. position but nothing work in the on position only the blower fan. I switched out the 50amp breaker and the 20amp breaker on the battery and still nothing. I've located a relay under the console but I think it only for the raise and lower unit. Battery connection are good.

Any help will be appreciated.