OK, the question has to be asked:

Why switch to LED tail lights (not trying to be a jerk, just curious)?

It boils down to SWAP, cost & performance.

S=size. No difference there.

W=weight. No difference there.

P=power. LEDs consume less power but in this application power is free so that's not a determining factor.

Cost: LEDs are more expensive than light bulbs so that's an argument NOT to make the switch.

Performance: I'll limit it to brightness, reliability, environmentals.

Brightness: LEDs can be brighter than lightbulbs without the heat so that can be a selling point ... but I'm not really interested in blinding the drivers behind me so I'm not convinced that it's a benefit.

Reliability: LEDs are more reliable than light bulbs ... but even with a factor of 10 improvement in life expectancy, you'd have to be Deermagnet to recoup the additional cost.

Environmentals: LEDs can handle water but lightbulbs can not. OK, that's why I already have them on my boat trailer but I'm not planning on submarinining my VX.

Somebody please 'splain to me why I should change over to LEDs on my tail.