Hey I am possibly getting some black door spears and was wondering how the heck I install these. Thanks for your help!

 

well they stick on, if the ones you are getting are used you might need to remove the old glue/tape and just put new on there....make sure you wash the area with dish soap to get the wax off that area before you go to stick it on.

 

Assuming they do not have the tape on the back of them, go to any auto parts store and get 3M trim tape.