Reversed Battery Terminals on Mastercraft X-45

[Beastb15]

A buddy of mine has a 2007 (or maybe 2008) Mastercraft X-45 with a 5.7L SS Crusader engine. We were working on installing some new audio equipment. As he was putting in the batteries he accidentally reversed the terminals on his bank battery. This in turn ended up setting ablaze his VSR in the process.

The Problem:
We get no response from anything when turning the key. No lights, no gauges light up and does not turn over.

What Does Work:
Horn, Blower and possibly bilge pump?

What We Have Tried and Looked At
- Luckily he had a spare VSR. I replaced that for him.
- The battery switch appears to be ok. He appears to be getting voltage at the correct spots in the correct switch positions.
- After some googling, I kept reading to check the 90 amp fuse at the starter for mercruisers. Well, this being a Crusader engine it doesn't have a 90 amp fuse or circuit breaker at the starter. It does however have an in-line 100 amp fuse in the cable leading up to the starter. This fuse looks ok and he is getting power TO the starter as it will crank manually from the solenoid.


I don't know enough about boat ignition systems to be able to trace where the power to the ignition should be coming from. Anyone have any ideas?

 

[Don S]

Re: Reversed Battery Terminals on Mastercraft X-45

Get a meter and check the circuit breaker.It may now be defective.
Just put the black terminal on ground and check both terminals on the circuit breaker. You should have power on both if it's been reset.

 

[Beastb15]

Re: Reversed Battery Terminals on Mastercraft X-45

Get a meter and check the circuit breaker.It may now be defective.
Just put the black terminal on ground and check both terminals on the circuit breaker. You should have power on both if it's been reset.

Are you referring to the circuit breaker right next to the batteries or should there be a separate fuse/circuit breaker for the ignition somewhere that we are seeing?

 

[Don S]

Re: Reversed Battery Terminals on Mastercraft X-45

I doubt if it's next to the battery, but you could look. I have no idea about a Crusader, there may be a fuse or circuit breaker on the engine, may be one under the dash for power to the switch, without a manual, you're just going to have to look around.

 

[Lyle29464]

Re: Reversed Battery Terminals on Mastercraft X-45

look next to the slave solenoid for the red button. push it in.