I have a 30 hp 2005 4 stroke EFI. The 20 amp main relay fuse is blowing as soon as you turn the key to the start position. We have tested the starter solenoid, main relay, wiring harness and everything seems OK.
I'm guessing I have a bad wire somewhere. My hunch is its in the tiller wiring from...
I have been blowing the 20 amp main relay fuse when I try to start my 30hp4sEFI with tiller steering. Tried testing all the connections in the engine wiring harness and tiller steering harness and didn't get any reading. Disconnected everything from the starter solenoid and was getting a reading...
Re: 2005 Mercury 4s EFI tiller bad plug on Engine Harness Connection
looks like the tiller handle connection #6 is the yellow with black stripe wire and the engine harness connection #6 is empty. 37 is the engine harness connection, 36 is the tiller handle connection.
Yesterday morning heading out for fishing turn the key and nothing, was thinking battery so tried backup and still nothing. Turns out the 20 amp main relay/accessories fuse was blown in the fuse holder assembly. Put a new fuse in and again as soon as I turned the key it blew again.
Did a...
