Battery Connected Wrong

[trsandyb]

Truck has sat in driveway for about 3 mos, and that's not usual, and normally will fire up with no problem. But, the batteries were getting old, so this time it sounded like and a check of them verified that we needed new batteries.

It was late and dark, and one of us hooked one of the batteries up backwards. So, now it doesn't, and sounds like there's no fire.

Can you tell me what fuses and relays to check, and maybe a systematic trouble shooting plan?

Thank You,

Ted

[dhanna6powerstroke]

Originally Posted by trsandyb

Truck has sat in driveway for about 3 mos, and that's not usual, and normally will fire up with no problem. But, the batteries were getting old, so this time it sounded like and a check of them verified that we needed new batteries.

It was late and dark, and one of us hooked one of the batteries up backwards. So, now it doesn't, and sounds like there's no fire.

Can you tell me what fuses and relays to check, and maybe a systematic trouble shooting plan?

Thank You,

Ted

Probably blew the maxi fuse for the PCM. It's a 20a maxi fuse under the hood.