Did you change only the rear bulbs to LED, or front and rear? I'd like to change the rear only but did not know if that was possible. Thanks for the pictures. Very helpful.
You should be able to just go with LED at the rear with no issues. I used a mix of LED and filament bulbs on my brother's truck - no issues.
You most likely will have to change your flasher unit to a newer electronic style flasher. I also did this on my brother's truck.
There are different styles of 1157 LED bulbs with regards to the placement of the LED chips. I use an online supplier called Super Brites LED https://www.superbrightleds.com/cat/...acement-bulbs/
You can check out the offerings as to the different types/styles. They provide dimensions and the angle that the LED light will project its light. Some of the "towers" may actually be taller than the standard filament bulb, so you may want to measure. If too tall, they have "mini" which is shorter.
You will see several offerings to choose from, like cool, natural, & warm. I thought the number you see with each box, ie 6500, 4000, 2950, was the brightness level. I found out not so. The "natural" is what you want if going with a clear/white light as it is the brightest of the three choices. The colored choices are what they are. You will see the lumins which is how bright they are.
Never had any problems and they ship very fast. So just a choice to take a look at.