Dual Battery setup
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Dual Battery setup
Is there a good thread allready posted for a dual battery setup?
I just had a camper given to me and think some re-wiring is in order. The dual battery would help for the camper as well as the winch.
I just had a camper given to me and think some re-wiring is in order. The dual battery would help for the camper as well as the winch.
Postmaster
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Go take a look at any '83-'94 Ford diesel truck at your local junkyard, then grab the driver-side battery tray off it and wire up the batteries just like the diesel was done - both positive terminals hooked up together and to the starter relay on the fender (or directly to the alternator charging cable), both negative terminals wired to the engine block. If you don't have a 3G alternator yet, now's the time to install one. I have a 130amp 3G charging the passenger-side battery (and from there the driver-side one too) directly through a 1/0 Welding cable and a 175mp MegaFuse, the starter relay is powered through a very short 4-gauge amplifier cable, I got enough lights on the truck to make the alternator darn near glow from heating up and the big-cable setup works great for me.
Thread Starter
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Senior User
Joined: Jan 2010
Posts: 181
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Go take a look at any '83-'94 Ford diesel truck at your local junkyard, then grab the driver-side battery tray off it and wire up the batteries just like the diesel was done - both positive terminals hooked up together and to the starter relay on the fender (or directly to the alternator charging cable), both negative terminals wired to the engine block. If you don't have a 3G alternator yet, now's the time to install one. I have a 130amp 3G charging the passenger-side battery (and from there the driver-side one too) directly through a 1/0 Welding cable and a 175mp MegaFuse, the starter relay is powered through a very short 4-gauge amplifier cable, I got enough lights on the truck to make the alternator darn near glow from heating up and the big-cable setup works great for me.
Post Fiend
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https://www.ford-trucks.com/forums/9...d-battery.html have a read right the way through this thread. Some great info, including wiring diagram.
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Senior User
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https://www.ford-trucks.com/forums/9...d-battery.html have a read right the way through this thread. Some great info, including wiring diagram.
Good stuff! Just what I was looking for! Cheers!
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Postmaster
Joined: Apr 2008
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I see, well with the huge amounts my diesel is drawing at startup I have to have two batteries in parallel all the time, your situation tho would definitely benefit from having a battery isolator of some sort. However, as mentioned in the other thread, if you go with a relay-type isolator make sure the relay is of the continuous-duty type, the regular starter relay that goes on the fender ain't continuous duty and so cannot handle high currents for prolonged periods of time.
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