Putting a relay harness in 9007, where the blue plug is where you put your stock plug, it has two wires coming off of it 1 foot long black and red. Don't know if I leave these disconnected or what? Any advice

 

Too vague, need better explanation/pix

 

those are the two wires everything plugged in and then there are those. already have a cable hooked up to the battery post and one grounded so i dont know what these could be used for

 

Need info about your hid setup, this a hi low or just low. That is basically the input for the harness to know when to kick on and off. Judging by only two wires, its a low only kit. In short it plugs into the stock harness coming from the car that would normally plug into the bulb

 

Got just got hids in stock housing for now bi xenon. Do I just leave these loose ?

 

Might as well try and if they work then tape those up and leave them.

 

It depends if they are low beam only you don't even need a harness, you can just plug the ballast straight until the stock connector. My setup is hi and low with and independent harness for power.

My setup has one plug from the hid harness to the stock harness that acts as a remote to tell the relay when to kick on and switch to high beams etc. Your is hard to tell. Post a pic of the harness