How to Install CDC Sequential Taillights (The product and installation applies to any 2005+ Mustang. Its easy, requires minimal time, tools, and money for parts. You can purchase the sequential taillights from www.classicdesignconcepts.com for $150. They are my favorite minor exterior modification for the new mustangs.
1. 11mm wrench OR 1/4" drive 11mm deep well socket and ratchet
2. T-30 Torx Bit with Driver
TIME REQUIRED: 40-60mins)
Remove bulb socket from the inner most taillight housing position and insert the sequential wire into the empty wire terminal space in the socket. The terminal locking tab will face in the same direction as the bulb. Pull on the sequential wire to assure the tab has locked into place