I'm looking to buy a set of sequential tail lights but I'm not sure which ones to get. I'd like ones that plug right into the harness, no cutting/splicing. Chase option is not needed, just the standard sequential. They must work with a 2007 GT, I've heard that the harnesses changed somewhere between 05-07.

The only ones I know of are the WebElectric ones.

 

I got the WebElectric ones from stangmods.com. Easy install. They work perfect.

 

I went with these, they are more involved to install, and the instructions are pretty good, not great. They do work well and save $$. You will have to cut wires with this kit.

http://cgi.ebay.com/ebaymotors/M-M-S...spagenameZWDVW

 

I got the CDC sequentials from MossMustang.
Mustang Unlimited also has them and offers
a $75 core refund for the OEM taillight harnesses.
Other forum members rave about the
meter4it.com kit.
Search sequentials as there are many posts
on the subject.
https://mustangforums.com/m_3703588/tm.htm

 

CDC tails, look pretty good.

 

go w/ meter-4-it

they have a chase option, which craps on standard sequence

 

chase is badass

 

I went with the CDC ones from Stage 3, $144.95 with free shipping, I wanted to keep my original harnesses just in case I have a problem in the future so that I could return to stock and not be stuck without my car.
http://www.stage3motorsports.com/product/CDC110630

 

Don't be afraid of the wiring. I did the meter4it kit a few weeks ago. Easy install and everything is hidden. Factory finish. And yes, the chase lights are sweet.

 

Another vote for "Chase". If you see them side by side, you'll choose chase.