ignition switch, whats wrong

Well, get your test light and a wiring diagram out and go to work

Usable wiring diagrams:

http://www.mymopar.com/downloads/1969/69DartA.jpg

http://www.mymopar.com/downloads/1969/69DartB.jpg

Look at diagram "A" and find your IGN switch

RED is hot power coming from the ammeter circuit

BLACK is a big wire feeding out to the fuse ACC buss

DARK BLUE (IGN1) is HOT ONLY in RUN ( NOT start) and feeds through the bulkhead to the IGN system and regulator

YELLOW is "start" HOT only in START goes directly through the bulkhead to one of the push on terminals on the start relay. The relay must be grounded through the neutral safety switch to operate if automatic, otherwise "where" the other terminal would have been is grounded to the relay case on stick cars

BROWN is "bypass" (IGN2) is HOT only in START and goes directly through the bulkhead to (ORIGINALLY) the coil+ side of the ballast

THE DARK BLUE AND THE BROWN must be hooked together if you have no ballast such as for MSD

So get your test lamp, hook it to wherever the IGN gets power and or check at the regulator IGN terminal. You should have "close to battery" with key in "run."
IF not check at the bulkhead. If you have it there, go back to the IGN switch. The switch terminals should be marked

YOU MUST UNDERSTAND that the dark blue "run" IS NOT HOT during "start" so starting voltage can ONLY come from the brown "bypass" circuit.