I had the same "no crank" problem as Danny for ages and I tried everything except the ignition switch. It was Reza who after all suggested the ignition switch to me as well, but my car has been parked for some time.
Now I'm about to DSM again and got to thinking...
1) A new ignition switch is probably expensive.
2) A used ignition switch is an old and probably worn out ignition switch.
I started reading about starter problems and voltage drop and why the ignition switch doesn't work. It's worn out and especially with everything on that circuit, it doesn't supply enough voltage to the trigger wire for the solenoid.
That led me here:
http://www.4crawler.com/4x4/CheapTricks/Starter.shtml#OtherOptionsSo now the ignition switch only had to supply a milli-amp current to operate the relay and the relay supplies the higher current required by the solenoid (which in turn supplies the 100s of amps needed by the starter motor itself).I've done it with a $20 trip to Princess Auto
Started very quickly on the first try. I'll post an update after some time on it.
