M936 Battery relocation

[FireFighterHill]

2 in parallel and 2 in series it is then!

 

[hotbox]

Sometimes my M923 starts right up, sometimes it don't. I plug it in to a 24v jumper and it fires. I guess one or more of the original batteries are toast. I think I'm gonna do the two batteries in the side box trick. Have the batteries. Also have several adjustable hummer buckets and a 12v center console made out of an ammo can. Whatcha gonna put in that old slave hole?

 

[bigboy44]

Sometimes my M923 starts right up, sometimes it don't. I plug it in to a 24v jumper and it fires. I guess one or more of the original batteries are toast. I think I'm gonna do the two batteries in the side box trick. Have the batteries. Also have several adjustable hummer buckets and a 12v center console made out of an ammo can. Whatcha gonna put in that old slave hole?

Going to cover it with a piece of sheet metal or a dummy slave recipitical and put a dunce cap decal above it. What you think?

 

[bigboy44]

Sometimes my M923 starts right up, sometimes it don't. I plug it in to a 24v jumper and it fires. I guess one or more of the original batteries are toast. I think I'm gonna do the two batteries in the side box trick. Have the batteries. Also have several adjustable hummer buckets and a 12v center console made out of an ammo can. Whatcha gonna put in that old slave hole?

On the starts and no starts, on my GMC Duramax that means I have a bad battery!

 

[hotbox]

Like It! bigboy44. Oh, this isn't Facebook.

 

[bigboy44]

Like It! bigboy44. Oh, this isn't Facebook.

Don't do facebook!!!!

 

[bigboy44]

Went to the welding supply yesterdayand seen a glove protector that I thought would protect my wires from the heat of the exhaust pipe and this is what I did. I wraped one shield around the positive wire and secured it with tie raps on each end and a radiator hose clamp in the middle, I cut a piece of rubber hose and split it down the middle and put it around the cable where it was touching the air line fitting and taped it up real good. I then took another heat shield and raped around the ground and the positive wire for added protection. I could not find out what the shields are rated for heat wise but it has to be better than nothing!

 

[Vintage iron]

You can check Jegs or Summit racing. They have a foil type protective cover for sparkplug boots and hoses.

 

[D3M0N]

I'd be interested to see how the cables are run, I just built a battery box to replace the existing cab and now I just need to move the batteries. Also I am looking to switch over to two Group 31 batteries. I'm on a learning curve with these vehicles so any help would be awesome!

 

[D3M0N]

Those "hot hands" are for use when welding with Flux Cored wire which runs HOT. I've smoked up gloves doing multi-pass welds on beams and after cooking my hand a few times I tried the hot hands and the worked really well. I don't know what their rating is but they can take some serious heat, so they should work well protecting those cables.

 

[Vintage iron]

I just finished parting out my M813 and had put new battery cables on it a year ago! Since the M813 has the batteries under the passengers side door, they will work perfect! Good thing I did this modification the m923 cables and wires where a mess! The hard part is getting the insulated brackets off the bottom of the cab. After that you can get to everything easy. I made sure to clean up all contacts and route the new cables and wires in a protective loom. I will be putting the batteries in the box on Monday.

 

[bigboy44]

Those "hot hands" are for use when welding with Flux Cored wire which runs HOT. I've smoked up gloves doing multi-pass welds on beams and after cooking my hand a few times I tried the hot hands and the worked really well. I don't know what their rating is but they can take some serious heat, so they should work well protecting those cables.

I drove the truck about 75 miles with no issues to the hot hand glove protectors. I too have had fingers in the gloves srivvel up due to the heat from 1/4 inch jet rods and goughing rods.

 

[jonesal]

The battery relocation kit does not call for insulating the wires near the exhaust. The directions that came with the kit have the wires going back much further (rearward) that what you have done, resulting in adequate distance from wire to pipe. I've checked mine a couple of times and the wires get much warmer from general heat from the engine/transmission, than from the exhaust. I suppose if you were idling lots in traffic or a parade, it might be something to watch.

Al Jones

 

[D3M0N]

When you switched over to the two battery set up how did you run your spare positive cable? I know the spare negative needs to be grounded, I was thinking of just doubling up the positive cables on one connector. Does anyone see a problem with that?

 

[frodobaggins]

I would just remove the extra cable. Or reroute it possibly to use as a power tap for accessories.

 

[hotbox]

Just did the battery relocation. I need some grommets for the back of the box, so the edge doesn't wear through the cables. Took about 5 hours. Pulling the seat and bench tomorrow.

 

[bigboy44]

I used a hose to wrap around my wires and taped them good, I also used the knockouts that were in the box and I could not find grommets big enough to fit the knockouts! That tool box is so much easier to get to the batteries than under the seat in my opinion!

 

[harleyboy1]

Did you use group 31's and where did you find the double hold down bracket?

 

[Vintage iron]

Made my brackets.

 

[bigboy44]

I also made my brackets. The batteries are Marine batteries with 950 cranking amps if my memory is correct.