OR VietVet Is Still Throwing $$$ at 2005 Z71

[OR VietVet]

I would put a quick disconnect on the positive wire connecting the 2 batteries. I get having the 2 batteries always connected will ensure that the second battery remains fully charged without any action on your part. But, having them both always connected won't alleviate that situation of the boy playing your truck's radio without the truck running and running both batteries down together, or inadvertently leaving some device on in the truck overnight and having it run both batteries down together.

Good call. Will do.

 

[OR VietVet]

If I'm not mistaken--isn't there a battery tray already there from the factory? Pretty sure there's one there. Take a look on the passenger side--under the fender brace.

This is what is there now. Does not look like a battery tray to me.

 

[OR VietVet]

If I get the Dorman tray at RA and with shipping and 5% off, is around $36.00. If I use my military discount at O'Reilly's, I can get it for $35.95

I did look and the 4 attaching bolts at the firewall are the same and the 1 attaching bolt at the other end would go under the ear of the coolant reservoir bottle. Then use a standard battery hold down and bolt.

 

[Joseph Garcia]

This is the quick disconnect electrical connector that I use. Don't be concerned about only 175 Amp rating, because it is a continuous rating, and these connector can easily handle 500 Amps on a few seconds basis to start the truck, when needed.

 

[OR VietVet]

This is the quick disconnect electrical connector that I use. Don't be concerned about only 175 Amp rating, because it is a continuous rating, and these connector can easily handle 500 Amps on a few seconds basis to start the truck, when needed.

View attachment 488168

Yes, I have used one of these before. I had an off road rig and had a female trailer hitch at both ends and could use my winch at either end and just plugged in the cable connection with this same set up.

 

[Tonyrodz]

This is what is there now. Does not look like a battery tray to me.

View attachment 488166View attachment 488167

Sorry I was mistaken. I thought it was a tray.

 

[OR VietVet]

Sorry I was mistaken. I thought it was a tray.

Maybe is different if was a pickup.

 

[OR VietVet]

So, today I removed the upper brace and the lower pan. I installed this battery pan and got the right battery hold down bolt for the extra hold down I had in my tool box. The best sizing, for the bolt, is a 2" long x M8 x 1.25. I did measure the height at the front, close to the coolant reservoir bottle, at the height to where the brace would bolt back in....6" at the most. The typical side terminal 12 volt battery would be 7.5" to 7.8" and clears fine at the back and will clear at the front but without the brace. Then just install the cables and a positive cable quick disconnect.

 

[West 1]

When I converted my 03 Yukon to dual batteries, maybe in 2014, I purchased the Factory Police Dual Battery positive wire set up. I wish I had done this another way. I had to wire it to the starter and route it from there. What a pain. At that time I did not know to go in through the tire well so I did it from below and wasted a few hours swapping the cables at the battery. I hope you have a better plan than I did. Looks lke you are almost there.