LED resistors?
#12
I can't imagine you'd need more than that. I'm about to convert the tail lights on my Jeep Wrangler over to round flush mount LED's (I've always hated the big honker trailer lights they consider tail lights). Even with them having multiple diodes (I bought two sets, 24 and 36), I'll need to rework the flasher relay because the low power draw of the LED's makes the flasher think there is a burnt out bulb, and you get the typical rapid fire turn signals. Anyway, my point is your current draw of the LED's is going to be much less than one regular tail light bulb. AutoZone also carries switches and in-line fuse pigtails, unless Radio Shack is more convenient.