Nothing works after changing batteries

[Dustdee]

I changed batteries on 2010 CXU 613 and now nothing works. Does anyone have a diagram or photo of how the three batteries cables should look? There is correct voltage to everything. No lights work either. Everything was normal before changing the batteries except they were dead and wouldn't wouldn't jump.

[mrsmackpaul]

When you say you have the correct voltage 

Were are you measuring the voltages at ?

 

Paul 

[Joey Mack]

Check the fusable link on the neg side.. connect a jumper cable from batt. neg. to the frame and retest

[Dustdee]

16 hours ago, mrsmackpaul said:

When you say you have the correct voltage 

Were are you measuring the voltages at ?

 

Paul 

At each battery and down the line past the disconnect inline fuse and the fuse box. Also the ignition

[mechohaulic]

16 hours ago, Joey Mack said:

Check the fusable link on the neg side.. connect a jumper cable from batt. neg. to the frame and retest

I'm guessing this is 3 -12volt connected parallel ?  right track Jojo 'bad connect on neg chassis cable .

[mrsmackpaul]

As I understand this

The truck wasn't working before the batteries were changed

The batteries were changed in a attempt to get the truck going but there is no change 

Is this correct  ?

And sorry I do not have a CXU wiring diagram 

 

Paul

[Dustdee]

41 minutes ago, mrsmackpaul said:

As I understand this

The truck wasn't working before the batteries were changed

The batteries were changed in a attempt to get the truck going but there is no change 

Is this correct  ?

And sorry I do not have a CXU wiring diagram 

 

Paul

The truck was working fine I just had bad batteries. I was trying to jump start and it would almost turn over but at least I had lights and the dash would go through iand cycle normally. I was thinking somehow I connected the batteries wrong but it has to be right in order to get voltage 

[Dustdee]

5 hours ago, mechohaulic said:

I'm guessing this is 3 -12volt connected parallel ?  right track Jojo 'bad connect on neg chassis cable .

Yes it is a 3 12 volt connected parallel I will check the connections again

[mrsmackpaul]

Take a photo of your batteries with the cables still connected and share it on here

We are only guessing and we are blindfolded as well as we can't even see what we are looking at 

 

Paul

[Dustdee]

On 7/30/2025 at 4:13 PM, Joey Mack said:

Check the fusable link on the neg side.. connect a jumper cable from batt. neg. to the frame and retest

Okay I found the problem by doing the jumper and now I feel kind of silly because sparks flew which lead me to the cable from the disconnect on the positve battery post. 

[Joey Mack]

good find. glad you didnt let the smoke out of the truck.. Jojo

[mechohaulic]

17 minutes ago, Dustdee said:

Okay I found the problem by doing the jumper and now I feel kind of silly because sparks flew which lead me to the cable from the disconnect on the positve battery post. 

wouldn't see a reason to "feel kind of silly" . silly would be not asking questions . it's called knowledge learned . also conversation over coffee ;or other beverage!