T8 charging problems

[fisher_i_am]

I think my T8 is not charging. Voltage on depth finder does not climb or move significantly when idleing or at wide open throttle. It may go up .2-.4 volts but no more. My main motor, F115, will bring voltage up to ~14volts.

Can anyone help me further trouble shoot or repair. I'm guessing its the rectifier but don't have any diagram or know where it is. Please help.

Thanks, Jason

[fisher_i_am]

Ok, I found the rectifier and part number. Now I'm looking for a wiring diagram to do a check on the rectifier/diodes.

Can anyone point me to a wiring diagram for 2004 T8PLHC.

[boats.net]

You would need to get a service maunal for test steps on rectifier.

[fisher_i_am]

I did a little more trouble shooting. I measured ~5 V between the red wire and ground at idle and it went even lower at WOT. Then measured ~25V between the green and green/white wire at both idle and WOT.

I'm guessing the alternator is doing its job but rectifier is not. I real close to buying a new rectifier ($100). Any more thoughts?

Thanks