Trying to get this truck to start after complete draw down. He left something on in his horse trailer which killed the batterys, not even a hint of a light. I hooked jumpers up and its been charging for 30 min. The light under the hood comes on but when you try to start nothing.

Rev the charging truck and hold at least ~2k while trying to crank the other truck.  

Edited January 26, 20178 yr by Me78569

6 minutes ago, Me78569 said:

Rev the charging truck and hold at least ~2k while trying to crank the other truck.  

Got it finally, I cant believe it took so long to start. Thanks Me78569 

I had this issue at one point.  I had some poor guy on jumpe rcables for nearly an hour and it wouldn't start, finally got mad enough and held the pedal at 2400 and it cranked to life.

He was about to call tow truck. Hell I thought a relay was keeping it from starting. No click, I mean nothing. But when it started it fired right off. Thanks