hey im don i have a 1996 ford f250 ext cab with a 7.3 turbo diesel and i cant figure out why the alternator is not charging the batteries i bought a new alternator and 2 new batteries and am on my 3rd new alternator and still less than 12 volts at the alterntor output. any ideas, i also just put a new glow plug solenoid on last week, thanks

 

No exciting power to the alternator. Light green wire with a red stripe.

Have you changed out the cluster?



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No I have not done anything other than batteries, glow plug solenoid, and alternator and starter. As far as electrical stuff goes.

 

Go ahead and check that exciter wire with a loading test light with the key on.
Also check those two fuse links by pulling on them, if they stretch they are bad.

Do you have a snow plow on this truck?

 

No there is no plow its a 2wd truck

 

Does the end tie into the voltage regulator?

 

Yes it does. It runs between the cluster and the voltage regulator.

 

Does the instrument cluster need to be installed for the alternator to charge the system properly? I have my instrument cluster pulled for repair and am only getting 12.5v at the batteries

 

Yes it does.