Two Battery Hookup on a 200 OX66

[<Barry>]

Has any one tryed to hook up the second red wire from the motor fuse box (capped at the factory) to a second battery. I have read the owners manual it shows that you can charge two seperate batteries at the same time while the motor is running.

[<boats.net>]

You didn't give the model number for your engine, but most 200 OX66 engine's have a built in battery isolator and buy a lead wire ( 68F-81949-00-00 check this part number for your model before ordering) to connect to second battery and connect a ground wire between the neg. post on battery's.

[<Salty Dog>]

I have a 93 250 that has 2 different size positive cables. One is for the main battery and one charges a reverve battery. Does it make a difference which is which?

[<Barry>]

Thanks for the reply, I have a 2002 200hp OX66 outboard. I have found the second wire (red) with a connector that has been blanked off. I will check into the part number you have suggested. I have both batteries tied together with a battery switch and both grounds are connected together. This will help solve the problem of charging the second battery. I have checked the wire while the motor is runing and I am seeing about 13.5 to 14 volts dc.