I'm kind of hesitant about cutting holes through my car but inspire side markers are tight... Would the dealership install side marker for me? Or is it hard to install by myself?

 

i think the only hard part is cutting the hole. The wiring should be easy.

 

I have sidemarkers on my TL and it looks great, especially with the blue lights. I had a performance shop install it for me. If you are unsure, take it to a shop. DO NOT go to the dealer because they will rip you off.