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It sounds like you're approach is very similar to mine, perhaps a little better, because I have an additional six feet of 8 AWG wire between the fuse and the alternator, and you used "heavy red". But I believe that's within the spec of 8 AWG wire. I think it's actually better this way because...

Thanks for the response. That's what I was thinking, but it seemed like a smaller fuse would have been warranted to prevent a long duration of a lower than 90 amp current from burning up the wire. I suppose that a short blows the fuse quickly enough that the wire doesn't have time to heat up...

I was replacing the alternator on my port engine, forgot to disconnect the batteries and shorted out the 90 amp fuse at the starter. It took a while to figure out the problem, as I didn't realize it happened, but I had no electrical power to the the engine. Looking at the wiring diagrams, it...

Thanks for the response. I believe that Blk psi low is related to raw water pressure, and the indicator is just confusing. The water pump impeller was replaced recently, and I believe that I do have good flow. I’ve run both engines on the ground and I didn’t see any noticeable difference in...

I have a 2005 300 Sundancer with 5.0L Mercruisers and Bravo II outdrives. I’m having an issue with my port engine getting Overspeed, and BLk psi Low alarms and going into Guardian Mode. I’m thinking it’s a sensor issue because it only occurs after the engine is warmed up and has been running...