77 F150 auto 6 cylinder starting problems
I tried the positive cables connected to the pos of batt to the solenoid
when i connected the neg cable my alternator started running? why is that .
It probably means that you have bad diodes in you alternator.
whats a diodes?
They are an electronic device that only allows voltage to go only one way so a voltage feedback won't happen. I your case it sounds like a complete failure.
Does anyone has another suggestion ... Any other solutions ? Does that mean I have to get a new alternator?
Yep, and you better replace the regulator also. Fortunately the older Ford alternators are very reasonably priced at your local parts store. I am guessing that you have either a 30 or 40 amp alternator as you only have the 300 cid 6 cylinder engine.
I also tried the positive cables to 2 sides of the solenoid and finally thr truck started.. someone mention if this is the case then I should have a ignition or safety switch issue...?