Hey I'm new the forums. I have an 01' s2000. My friend and I hard wired my radar and installed a new head unit. Long story short when I was leaving his place we realized that my tail lights and front lights (not the HID's but the ones on the outside) werent turning on. Also, the interior lighting (speedometer lighting stopped dimming when I switched the lights on). Do you guys what possibly happened there and how to fix it?

 

check fuse #23 in the underdash fuse box

 

if you guys only installed a new head unit and a radar none of those wires should have been touched. its a totally different harness

 

fuse 23 solved everything. thanks a lot!