I cannot figure out the wiring diagram of the ingnition switch...

check your coil connector wires......if there 1 wire dislocate or cut the wire connect that wire.

yes you can, 1991 Dodge Dynasty Ignition Switch

Things You'll Need

• Screwdriver
• Tamper-proof Torx driver

• Ignition key

Instructions

1. • 1 Remove the plastic cover from the steering column. The cover is two pieces held together by screws that thread through the bottom piece of plastic into the top piece. Remove the screws and pull the cover off. This exposes the large square ignition switch. The key cylinder connects to the ignition switch.
     
   • 2 Remove the tamper-proof Torx screws that secure the ignition to the steering column using a tamper-proof Torx driver. You can get this type of Torx driver from your local auto part store.
     
   • 3 Pull the wiring harness out of the ignition switch.
     
   • 4 Place the ignition key into the cylinder and turn it onto the auxiliary position. Push the metal pin on the ignition switch in using a screwdriver and slide the ignition cylinder half way out of the ignition switch. Turn the key to the off position and slide the cylinder all the way out of the ignition switch.
     
   • 5 Place the key into the new cylinder, slide the cylinder into the ignition switch half way. Turn the key to the auxiliary position and slide the cylinder in the rest of the way. Remove the key from the cylinder.
     
   • 6 Press the wiring harness onto the ignition switch.
     
   • 7 Secure the switch to the steering column using the tamper-proof Torx driver.
     
   • 8 Place the covers back onto the steering column and secure them using the screwdriver.
     

Read more : http://www.ehow.com/how_7460507_replace-key-ignition-dodge-dynasty.html

there may be a broken wire from the ignition swith going down the steering column,theres two sensors at the begining opening of switch, sometimes they get stuck and dont pop back out, in turn it doesnt touch the chip on the key and cant read it,take a look with a light use a small pic and push lightly on them and see if the y push in and pop out, if they do then replace ignition swith,theres a way to bypass,use an omh meter and measure resistance of key chip, then buy a resistor with the same value,and connenet to wires from switch under the dash,cut wires and put conecting the two going to switch with resistor connecting them together,heres a diagram,

SOUND LIKE IGNITION MORE THEN LIKEY IGNITION MODULE OR INGNITION COIL. BOTH COME WITH REMFD. DISTRIBUTOR.

what engine?

Ignition switch?

supply to switch,switched supply ,and starter motor ,with the posibility of an aux for teh radio

I had the same problem last summer. Poor thing was dead for 2 months. Finally figured it out. Under the steering column (under the driver's side dashboard) there's a small connector with an orange cable that has two small white wires inside it. These wires come from the ignition switch, and run to the PCM (computer). The small chip in your key isn't being detected. The two wires on this connector connect to the key when it's in the slot. The ignition switch is bad, and not connecting to the key when it's inserted. Try cleaning up the chip contacts on your key, or try your spare key if you have one. Also spray a small amount of contact cleaner into the ignition switch. Insert, and re-insert the key a bunch of times to clean up the inner contacts. This should take care of it. Post a follow-up message to let me know if it worked or not. There's another solution, but it's not something I'd wanna post online because it gives away how to bypass the Pass Key theft deterrent system.
GOOD LUCK!

Removal

1. Disconnect battery ground cable. Remove the steering column shroud by removing the four or five self-tapping screws. Remove tilt lever (if so equipped).

1. Remove instrument panel lower steering column cover.

1. Disconnect the ignition switch electrical connector.

1. Rotate ignition key lock cylinder to the RUN position.

1. Remove the two screws retaining ignition switch.

1. Disengage the ignition switch from the actuator.

Installation

1. Adjust the ignition switch by sliding the carrier to the switch RUN position. NOTE: A new replacement switch assembly will be set in the RUN position as received.
   

1. Check to ensure that the ignition key lock cylinder is in the RUN position. The RUN position is achieved by rotating the key lock cylinder approximately 90 degrees from the LOCK position.

1. Install the ignition switch into the actuator. It may be necessary to move the switch slightly back and forth to align the switch mounting holes with the column lock housing threaded holes.

1. Install retaining screws. Tighten to 5.6-7.9 Nm (50-69 lb-in).

1. Connect electrical connector to ignition switch.

1. Connect battery ground cable. Check ignition switch for proper function, including START and ACC positions. Also, make certain that the column is locked in the LOCK position.

1. Install instrument panel lower steering column cover.

1. Install the steering column trim shrouds and tilt lever (if so equipped).

Well I would suggest looking up the cost of the ignition switch yourself, this way you can figure out how much they are overcharging you for the part and figure out the labor charges. I would look into replacing it yourself if it comes down to that being the problem, most cars aren't hard to do. BUT, if it tested good already and a wire is bad to the starter that would be the place to start. If it doesn't work after that, move to the next step. You can also have it scanned and see if any codes come up, those cars are notorious for having cam/crank shaft sensor issues. Good luck!

my 1997 honda accord ingnition will not turn with my key in makes dinging sound but will not let me start the car. Can somebody tell me what's wrong?