So the check guage lights came on and volts dropped, replaced alternator and then the battery blew up.... replaced batteries and check gauge lights came on again and volts dropped again. I have code P2502 and I am stuck 5 hours from home, battery cables are clean and all connections are tight, cant get into see mechanic for a few days, need to get home, drove through lots of mud and water, what did I ruin? any ideas??..

i am looking for a fuse to maybe change out but i'm not sure which one is the alternator fuse, the cover does not say.

thanx

 

that code means charging system error. Basically is said that it either could be battery cables, high resistance between the cables, (probally not but you should check) or the ecm. You said that you ran through alot of water maybe the power distribution box got wet. Check the fuses. You really need a digital volt ohm meter.