Do I need both batteries?

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smoothandlow84

I'd rather be draggin' frame
Joined
Jan 4, 2015
Posts
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Location
Arizona
First Name
Steve
Truck Year
1984 Frame...87 motor and 700r trans
Truck Model
1500 r10 pavement scraper
Engine Size
350 TBI
Don't forget diesels have glow plugs and not spark plugs. Along with high compression, both batteries are a must in order to ignite the glow plugs AND crank the motor.
 

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