1976 Ford F100 won't start

Asked by Jul 05, 2018 at 02:21 PM about the 1976 Ford F-100

Question type: Maintenance & Repair

Ford F100 won't start.  It's got a new starter that a friend put on for me and
that worked for awhile, but now that doesn't seem to help.  I haven't driven it
much but about a week ago I went to crank it for its once a week start.  Lights
came on the dash but no click from the solenoid.  I tested the battery with a
multimeter and it read 12.4 volts.  I read some conflicting information on if that
was enough so I charged it in a deepcycle mode and got it up to 12.75 volts.  
Lights in the cab were still coming on when I tried to start.  After some
investigation and the help of an old repair manual I discovered it probably was
the starter relay.  I replaced that same thing happened.  I decided at that point
to try to jump it with the 50amp mode on the charger.  Lights on dash came on
but nothing more.  I've tested everything with the mulitimeter that I have seen
guidance on testing.  Now the dash lights won't come on.  I'm stuck.  I don't
know what to do.  I really think this is something I can fix but I'm hampered by
not a lot of knowledge in cars in general.   Right now it has a new starter relay
and starter.  The battery is at 12.75volts, no start and no lights on the dash
when the key is turned.  I did look at the fuses they seem fine.  I even tested
them with the multimeter, but they aren't getting any power.  The problem to
the cab is power isn't getting there which means turning the key won't help
start.  Oh I've tried the whole bridging the solenoid trick to get it started I see
some sparks and then nothing happens other than my wire gets warm.  I look
at the wiring diagrams and cannot translate that very well.  I'll take any
thoughts or suggestions.

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