triverrat
Registered User
I have a f 350 super duty 4x4 1987 will adding another battery or 2 increase my cold cranking power? and i use extra lights on the back alot to see while loading and unloading! ive got a switch that has three settings on it.battery A,B and both , i was going to use that to run my lights and to back up my original batterys for cold starts or dead battery.is there any spiecal way that they need to be wired or is this too much for my altinator?sugestions and advise welcome ,thanks