truck stalls when using dump body

[General Grounds]

:blob3: my chevy truck will stall when using the dump body. ive cleaned all connection, replaced battery and even had the brushes in the motor replaced. just wonderin if i could have missed something? i do think i may have a problem with the second battery (dual) set-up which may be the problem. but after that and maybe the alt. im lost any suggestions. thanks tony

[Edgewater]

Mine did it too, turned out that the alt belt was slipping and the bat was just strong enough to keep the engine running under normal conditions, then when the electric pump drew power, none left for the coil.

[greywynd]

When you cleaned the connections, did you clean the ground? I know on mine I ended up running a ground cable back to the frame, where the ground terminal from the battery bolted up. Basically a direct ground to battery. This seemed to help a lot on battery draw.

[MastercutzLawnCareII]

Sounds like something is either crossing out or its got a bad spot in the cable and its touching metal causing it to ground out...