my cab just wont start can any help

[aaron735]

i tried to start it last nite but nothing when i turn the ignition on it all lights up fine but when i try to start nothing but the sound of a relay click if i bridge the 2 pins on the diagnostics plug it will start and run fine any ideas thanks in advance

[zaust]

Sounds like you awnsered your own question. Trace the wire back to see if there is a brake or look and the ignition barrel itself...