I didn't really fancy an ugly old battery in my clean engine bay, I'd considered putting it under the cab floor or pick-up bed, but I want carpets and a polished wood floor so I decided against that. To find somewhere the battery would fit the first job was to make a cardboard "battery",
By making it the same size as my battery I could work out where it would best fit. So much easier to try in different locations than a real (heavy) battery.
The best fit was under the cab floor towards the back of the cab. I put it on the passenger side because the original battery cable was long enough to reach which made the job a bit easier. I made a battery box out of some angle and flat bar I had lying around. This was bolted to the frame with stainless fasteners, I used button heads as they are nearly flat.
By using a side terminal battery I could mount the box higher for extra ground clearance.
I still need to make a cover for the box but for now that's on the "to do" list