vechicle won't start on 1996 Plymouth Grand Voyager

Battery is good! When you turn the key there is nothing-no panel lights and you can hear a very rapid clicking sound coming from under the steering wheel near the fuses and relays.
have checked the fuses and all seem to be fine. WHATS UP??

3 answers
Possibly the ignition switch has failed $65 to $75 for the switch and about 1hour in labor
It could also be corroded battery cables from battery to starter. I had this problem with my 92 ford explorer.
could be the module