Dual Battery Connections

[custodian]

Can some tell me how the dual batteries are connected on an 85 C10 with a 6.2 diesel. I think I know, believe to be in series. The batteries were missing when I bought the truck. Has a negative cable on the drivers side and a positive cable on the passenger side.

 

[chengny]

Wiring diagram for an 85 (with federal package):

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[varmit86]

measure twice cut once, usually works the best.

 

[Preston]

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This should help

 

[Blue Ox]

Ummm,... yeah,.... The grounds go to the block and the positives are tied together on the passenger side battery.

 

[Wumbo]

Wiring them in series would give you 24 volts. Don't do that.