Anyone know a good place? where do the little clips wire into?

 

The gauges will have a clip connector like the one shown. They all connect to a main harness with a brightness dial, some you can switch betwwen green or blue indiglo lighting.

 

heres mine durning the daytime

 

where is this main harnesss?

 

it should have been supplied with the gauges, did you buy these used? Maybe you should contact who you got the gauges from. Mine had a few connectors, one for each gauge, and it hooks to a ground somewhere and a hot wire. I spliced mine into the parking light wires so the gauges come on when the parking lights are on.