2003 T600 starter diagram. No signal getting to solenoid.

This is a 03 t600
Truck will not start with the key (we are jumping the solenoid to start it)

Key has 12v out when you turn switch to start, switch is good.
Wires OHM out up to the firewall I cant find wire that comes out of the key switch at the fire wall it turns into 3 wires. I can jump the wires out of the harness near the fuel filter that runs to back battery box and jump it so everything is good there. It seems my problem is from the key switch inside the cab (yes Ive changed the relays) If someone have a Wiring Diagram Id be able to track this problem down.

 

Cool thanks a lot

 

You wouldnt happen to know where I can get a diagram of the cab electric circuits. My power wire to the cab gives power to the frame and lights up my test light and radio fuse blows every now and then and key switch , parking lights, headlights trip the relays. Pretty sure I have a short in the cab somewhere.

 

Figured it out just jumped a wire to selonid from key switch other wire has a short somewhere.