Isn't charging

[stlboarder]

Long story short. My battery died. I replaced it and my belt since it was squealing. I replaced my alt. Jump started my truck. It runs fine except it isn't charging. Any suggestions?

 

[Earl43P]

Bad cable?
Blown 125A megafuse?
I can send you schematics, PM me your e-mail address.

Got a voltmeter?

 

[Ranger44]

Take it to an auto store and have it load tested.

A DMM test will only be effective if it were recently charged.

 

[Stranger ranger]

put the old alt back on, see if it charges. alts can be bad from the get go.

 

[stlboarder]

Before I start the truck the battery is at around 12.4 once I start the truck it drops to around 11 or so. I checked at the alt and while idling it's showing around 20. This means that something between the alt and bat is either disconnected or blown. Correct?

 

[stlboarder]

I've been looking at the wiring diagram and saw that if the 125A mega fuse is blown then the link between the alt and bat are severed. I tested the fuse and got nothing. I'm hoping this is the only thing wrong. I'm going to replace it tomorrow.

What do you all think?