Gold Lifetime Member
Join Date: May 2012
Location: Trumbull CT USA
Re: Blown fuse
Like Al wrote, I thought the largest fuse is a 25 Amp.
You need to Isolate your circuits, Sounds like one has gone to ground.
1 - Does the Fuse Blow when you turn your Ignition Key to the Run Position ?
Then it Blows when you rotate it to the "Start" Position ?
and do you hear the Starter make any noise ?
2 - I would Remove the Purple Wire to the Starter, with a new Fuse or Short Circuit Tester in place of the Fuse, Turn the key to where it was blowing the Fuse. If that is OK, I would Change the Starter Solenoid/ Starter assy.
3 - If your problem continues, then you should remove the Wire Harness Ignition Switch Plugs and ring out each Circuit to see which one is Grounded.
4 - I would say the Ignition Switch is the Cause. If you can get one from somebody and try it.
What is happening is when you install a new Fuse and Turn your Key, it is taking that Voltage and running it into a Wire (Purple) past the Neutral safety switch to "pull" the Starter Solenoid into Contact to turn the Starter.
1969 SS/RS Coupe 427BB 700R4 12 Bolt 4:11 A/C, High School Resto Mod
November 1968 Build Date