Having an electrical issue with a Volvo 2003 diesel... the panel is dead. no instruments, warning lights, or starter works. The engine will start by shorting the starter to battery voltage (bypassing panel and starter panel).
I've replaced alternator and starter relay... it did not help.
The start panel is getting battery voltage but I think there is a ground fault. I ran separate ground wire from the battery "-" to the ground wire at the panel. When I did this, the RPM backlight came on and I'm able to start the engine. But the other guages are dead and I don't appear to be charging the batteries from the alternator.
The alternator is an isolated ground alternator. I'm wondering if I have a flakey ground or a harness short somewhere...
I wish I had a good boat wiring diagram / schematic. I suppose I could check the resistance between the alternator B- and the negative battery terminal... I've checked it to the negative master switch terminal but not back to the actual battery terminal. But if it were the master switch causing problems, you'd think I'd be having problems will also of the boat's electrical systems. I'm only having trouble with the panel and starting circuit...
Any thoughts?
I've replaced alternator and starter relay... it did not help.
The start panel is getting battery voltage but I think there is a ground fault. I ran separate ground wire from the battery "-" to the ground wire at the panel. When I did this, the RPM backlight came on and I'm able to start the engine. But the other guages are dead and I don't appear to be charging the batteries from the alternator.
The alternator is an isolated ground alternator. I'm wondering if I have a flakey ground or a harness short somewhere...
I wish I had a good boat wiring diagram / schematic. I suppose I could check the resistance between the alternator B- and the negative battery terminal... I've checked it to the negative master switch terminal but not back to the actual battery terminal. But if it were the master switch causing problems, you'd think I'd be having problems will also of the boat's electrical systems. I'm only having trouble with the panel and starting circuit...
Any thoughts?