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I finally got around to installing a second battery on my F250 today. I thought that some of you might be interested here's some details and pics.
I bought an oem ford under body mount box (from an E series psd) I choose the inside of the drivers frame rail between the transfer case and fuel tank for the location, I used 2 x 1/4" flat stock and welded these 2 plates to the frame rail
pic 1
I then installed a standard 65 series battery (the same battery the truck takes) in this box
pic 2
Here's what it looks like all done
pic 3
I have all parts #'s used, if anyone needs for info let me know.
Hey that's pretty sweet. I added that box to my '99 E350. Good solution. FYI: I had a yellow optima in there for 5+ years and it was in great shape when I took it out. The fancy battery cable clamps I had on there were kinda a mess, but I cut them off with a grinder and still use the battery that was in there today.
Nice job... what year is the truck? I was thinking about getting the diesel 2nd battery holder ('05) to install second battery - unfortunately it's $70.00 for one stinkin bracket. Have template made for rolling my own, just no time. Also looks like the air intake wart is in the way - anyone know what thoes things are for?
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alchymist, my truck is an 04, I have seen a few battery installs under the hood and was not impressed, the air cleaner is just to big and something always rubs and gets damaged, to rework that air cleaner is near impossible which is why I went in this direction.
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Nice job... what year is the truck? I was thinking about getting the diesel 2nd battery holder ('05) to install second battery - unfortunately it's $70.00 for one stinkin bracket. Have template made for rolling my own, just no time. Also looks like the air intake wart is in the way - anyone know what thoes things are for?
Don't know what the "wart" does! on my 2005 F250 SD! I cut it off and duck taped over the hole in the cold air intake and have not had any problems. Now with the new Battery tray from fordpartsdealer.com all I have to do is bolt the new tray to the holes in the left fender. There is even the extra battery support all ready atached to the front. It even lines up with the main stock battery. I will take some pictures later this week. Now all I need is 2 new Red top Optima's and 2 custom cables from custombatterycables.com
Nice job. Could you give us a little detail on the wiring? What went where? Did you use an isolator? Thanks.
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Just like a sad dog at the shelter with those eyes... I had to have her: 1977 F250, 460 V8, C6 needs love: PS pump, hoses, gearbox, fan clutch, dimmer switch, blower relay, battery cables, headers, muffler, rattle kit, door seals, ignition module, Kenwood, and on and on....
Nice job. Could you give us a little detail on the wiring? What went where? Did you use an isolator? Thanks.
Nothing fancy with the wiring, I fabricated 4ga cables with welding cable and crimp on ends. I ran them across the floor between the heat shield and the floor, then up the frame rail to the oem battery and tied in. I wanted this battery mainly for snowplowing where you have short high amp bursts. This type of connection for what I do seems to work the best for the type of load I have. The other deciding factor was how many isolators and solenoids I see go bad at work.
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