I went to summit to buy an O2 sensor simulator, I get home and hooked it up. My o2 sensor's wires ended up touching, and now my car has no speedo reading, it's idling very high (around 1,500 rpm) and if I touch my window buttons all of the lights go very dim. Does anyone have any idea what may be going on?

 

Well, since you caused a direct short on whatever circuit you are powering the simulator with, I'd start by checking the associated fuse(s).

 

any idea on what fuses it may be?

 

it was just the speed sensor fuse. bleh.