installed a new head unit in my 2002 mirage.. being a beginner i cut the standrd plug and spliced the new one intot he existing wires.. but thre was 1 wire left over.. and there is no constant battery.. so every time i turn the car off everything resets.. along with the in dashclock.. the trip meter.. and he interior light doesnt work anymore.. please help, i dont want to spend a fortune on sending to the auto lecky if its a simple job.. but other than the bad issues the system sounds great!!..

there is two fuses in the engine compartment that will turn off your interior lights and kill your constant wire.

http://www.mitsubishi-forums.com/t35545-ra...uit-working.htm

check this post it has a picture of the two fuses that control everything you said is going haywire.