I put a set of these on my 68 about 7 years ago and they are still working great.  https://www.classicleds.com/products64-66.html I got a set because back when we did the Bash in Kalispell, I was following Dave68 and he had LED sequential tail lights and I thought they really looked great.

Last edited by Ron68 (4/02/2024 1:19 AM)

I added two LED 1157 replacement bulbs, similar to what Gary used, to each tail light and kept the 1157 incandescent bulb also.  I replaced the front park/turn bulb with an LED 1157 replacement.  The stock bi-metal flasher works perfect but I did have to add a diode to each tail light circuit to prevent cross-feed from the stop/turn circuit.  I made up a wiring diagram of this mod and Josh also used it on his FB with good results.
You're welcome to the diagram if you want it.  Just shoot me a PM with your email address.
 

I did a fair amount of research before I bought my rear LED lights.  They are still in a box at home.  I’ll try to remember and look at where I bought them and post it.

I went with a set of taillights with the LED's integrated into the taillight lenses. I don't remember the brand, but they have been fantastic and lasted for a number of years so far.
Very bright...

I bought these back when they were $100 less from a recommendation of a fellow 69 owner. My main concern was I didn't want to see the individual LEDs thru the lens. These put out a nice solid red without seeing a bunch of red dots. I also installed front turn signal LEDs of unknown make, as they were given to me. They too put out a lot of light.

https://www.cjponyparts.com/non-sequential-led-taillight-kit-ultra-bright-mustang-1969/p/TLLED58/?lac_guid=a4cbaab7-fffa-eb11-835d-0050568b5164