77 wiring problem
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77 wiring problem
I've got a 77 F250 that keeps eating alternators and Vregs. It blows the fusable link (which is now a 60 amp maxi fuse) as well. The strange thing is that it happened, I repaired everything and them it happened again about three months later. I haven't found any shorts and haven't found anything that would pull enough current to take out the fuse. I am thinking along the lines of something unfused is intermittently shorting. Any ideas?
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Freshman User
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Thanks for the info, Bill. So does that mean if the battery terminal is corroded it will take everything out, or will it just take out the fusible link? You would think that they would design it to be a cheap fix. I replaced the Maxifuse (fusible link) and measured current from battery ground to the ground cable and have no drain. I think this indicates that the Vreg and Alt are OK. I will fire it up this weekend and see what I have. Thanks again for the help.
Fleet Owner
Joined: Aug 2005
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From: Easton,Ks
Originally Posted by Pocca
Thanks for the info, Bill. So does that mean if the battery terminal is corroded it will take everything out, or will it just take out the fusible link? You would think that they would design it to be a cheap fix. I replaced the Maxifuse (fusible link) and measured current from battery ground to the ground cable and have no drain. I think this indicates that the Vreg and Alt are OK. I will fire it up this weekend and see what I have. Thanks again for the help.
Last edited by subford; Jan 17, 2007 at 12:17 PM.
