i have a 99 gtp,having multiple issues.the battery was constantly going dead over night.new battery, even had a trickle charger on,still went dead. had the alternator checked for charging and diode-all good there. was having issues with ignition switch not going into the locked position-replaced the switch, but still will not go into the locked position.also, the gear selector indicator is always lit up. now tried to start it today,won't do anything-except for gauges going nuts. the gas gauge dropped to half, the tach MAXED out,bouncing around kind of vibrating-could hear weird clicking under hood9w/key in run position, not trying to crank engine).also have idle issues-won't idle cold, idles way too high warm-don't know if this is related at all......i don't know where to start looking anymore.could this be an issue with the ignition switch? any ideas greatly appreciated. thanks.