Reverse Glow Gauges

I recently installed white face reverse glow gauges on my 2000 Avenger ES, but i wasnt sure where to splice in the 2 wires, i know one goes to ground and the other is supposed to go to the parking lights, but i dont know where that exact wire is.... if anyone knows please hellppppp

i also bought the reverse glow guages...what i did was that i wired it to the back of my cruise control switch that is to the left of the steering column. that whole switch board pops out very easily and on the back of it you will see 3 plugs...one is kinda YELLOW, one is BROWN, one is BLUE...what i did what on the blue one i spliced the GREEN wire with the WHITE stripe on it and connect that to the RED wire on your guages. There is also a BLACK wire with a WHITE line on it. You splice that wire to your BLACK wire from your guages and you should be set...any more questions you are more than welcome to email me