Ac s7 Gauge installtion help!

Hey i have a 98 accord v4 auto and i want to change the stock gauge to a ac autotechnics s7 guage. i was sucessful in getting to the stock gauge part, but i really dont know where the parking light wire is which i need to attach the red wire from the inverter to control the lighting of the gauge. and where should i put the ground wire. any help would be nice. thanks

I was wondering if i can connect the red wire to the overhead light lamp wire in the dashboard. Because i dont see other wires besides it there.

my gauge i bought:
http://www.eautoworks.com/html/ORD-1-1-1-15564.cfm