hmcclard
New Member
- Jun 13, 2017
- 4
- Boat Info
- Charlie M, Portsmouth NH. Mostly New Bern, NC, and Outer Banks area
- Engines
- 454 Mercruiser Bluewater engines
I have a 1989 340DA with twin 454's and 2 group 27 batteries on the starboard side and 1 group 27 on the port side. I'm cleaning up the engine compartment while both engines are being rebuilt. I found the Guest battery isolator is dead, doing nothing. It also is wired between the group of 2 and the 1 on the port side. The starboard side has one deep cycle and 1 starting battery hard wired together. It really hasn't been a problem and I never paid attention until now with the engines out but should the isolator be between the deep cycle and the starting battery?? I'm a little confused about whether to replace the isolator or maybe rewire a new one or just put my bliders on and say "whatever" if it ain't broke don't fix it and put one of the newer models in as it is wired.