batt Test

[shawnshurman]

our truck can't hold it's charge
replaced both batteries twice
tested for key off draw

and still we cannot find the leak

[John I]

Had same problem, only discovered when cable chaffed through enough to generate enough heat to melt main air line, right frame rail just behind cab. With this one I also experienced starter solenoid problems.

[Unregistered]

did you try to pull all the fuses and see if you still have a draw on batteries? Also disconnect the negative cables and install a test light between them and if it lights up then you have a draw also. What type of engine do you have, ECM or older?