It's a decent extra light for brake/tail light for the money.  I installed on my Wrangler and it snugged right up to it with the foam sealing piece whereas others have stated it did not.  I'm leaving the standard bub in there because it's the same brightness as my stock tail lights.  Don't plan on upgrading to LED's because of the problems I've heard from all the Chinese knock offs.  I'm sticking with the standard bulbs and everything is fine.  I did wrap the exposed color wires with rubber tape and sealed that with electrical tape....all is well and working good.  Now 4 bright stop/brake lights hit them from behind instead of 3.