LED Tail Light Replacement Bulb
It's been a few years since anyone commented on LED tail light replacement.
I bought this red tail light pair from Amazon for $13 with free Prime shipping: https://goo.gl/djppSS
This is the title to search for in case the link goes stale: "LUYED 2 x 650 Lumens Super Bright 1157 3014 54-EX Chipsets 1157 2057 2357 7528 LED Bulbs Used For Tail Lights,Brake Lights and Turn Signal Lights,Red"
They plugged in and worked very well on my 74 Spider. Much brighter than the incandescent ones and of course at a lower wattage.
FYI, The first set of bulbs I bought on Ebay did not work for those of you that may try that approach.
The picture below shows new bulb on the right.