Hey guys,

I bought a 97 F3 a couple months ago and it ran great since I bought it. However yesterday I went to turn it on and nothing happened when I turned the key switch. The display didn't light up (it has had the F3 to F4 swap done.) I check all of the wires going to the display and redid any connections that were easily pulled apart. I then checked the fuses and found they all had .5 volts. The battery is at 12.8volts and has a good chassis ground. I next took the key switch off and used a couple of pins to probe the wires to the switch, the red wire has 12v when the key switch is off and blue has 0v. When I turn the key switch on the red and blue both drop to less than a volt. I also tried to bypass the switch with a wire, but nothing happened. I feel like the key switch is bad, but I don't understand why I wouldn't be able to jump it.
Any ideas would be helpful I'm trying to go on a charity ride Saturday!!
Thanks.

 

could be but have you checked the 30a fuse on the starter relay? that fuse messed me up once. and do you know the condition of the battery under load? does it drop that much at the battery or only the switch?