Passing this along for what it's worth.

(2) 6 Volt Optimas in series. One on each side between the running board and frame. Modified a Speedway Billet tray for the 6 volt which allows the battery to drop down when replaced. I'll castle nut/cotter pin the tray later.

Because they are tucked away pretty well, I opted to install a floor mounted heavy duty shut-off switch just inside the driver's door for safety and convenience. Additionally, I added remote terminals on the firewall to provide or receive a jump. Cables are 1/0 gauge up to the firewall, then 4 gauge to the starter.

Not cheap or easy but I'm happy with it and perhaps somebody might find this useful.

Dawg-a-roo

 

Very nice setup. The battery locations use space that is typically "wasted" space under the truck. I thought about using that space for a battery but did not think about the much narrower optima 6V.

 

My setup with a drop down box which works however It has to be very carefully fit into the location working around the e brake cable and the exhaust X. For the same reasons I suspect, I also have a battery shutoff switch and a charging terminal.

 

Nicely done Dawg


Innovative idea to split out into the two 6V batteries.


Bobby