Fender mounted starter solenoid
I have a 1990 ford f150 with a 5.0 liter v8 and the post on
my starter solenoid which I believe is fender mounted
glows red when you start it. For some reason my alternator
tested bad but my truck runs fine drove it all over town.
Jumped the battery and it ran fine. Turned it off and tried to
start it again and it was dead.