Charging system help please

[Sabaka454]

1985 Baja 220 sport with a chevy 350 with no charging system output. It has a junction block that says GUEST on it. The center wire goes to the alternator and has an output voltage of less than 2 volts with the engine at 2000 RPMS. Does anyone have a schematic or more information on this charging system? It is greatly appreciated!

 

[Barnacle_Bill]

Re: Charging system help please

Describe all the wires that come out of the "Guest" box. Is there a model number on it? It may be an on-board charger hooked up wrong or perhaps an isolator.

 

[Sabaka454]

Re: Charging system help please

After doing some research it is the battery isolator and appears to be wired correctly. The alternator was toast. Anyone know where I can get a good manual for this boat?

 

[rndn]

Re: Charging system help please

You'll do okay to get a good Mercruiser service manual. Baja will not have anything in regards to the engine and outdrive.