yep led replacements are dam bright. and u can buy them for a few dolars from ebay

ebay link

you can buy a led globe replacement with a bayonet to fit straight into your taillights try dick smiths
dazza

I found a page with a good dicussion on home made LED tail lights and visibility...

http://www.instructables.com/id/SYZK1FLF3KLNVE5/

Its actually a very good site for how-to's on many different things!!!

was following a hilux the other day with LED taillights on its tray, had probably 20 little LEDs for each light.....and holy #### was it blinding when he got on the brakes or put his indicators on, and that was during the day

You'll want the smaller, flatter type. Not sure what else to call them?!? Definitely not the old type where they are covered with a dome like plastic cap.
Try and find out what angle/degree light is visible from them in their spec sheet. The wider the better. I'd say that you want to try and use as many as you can neatly. Those small replacement led globes look terrible and give bad visibility.
I'm sticking with normal globes on this build- No ADR's on homemade lights i wouldn't think..

Hi Guys,

I'm looking to make LED tail lights for my 1200 deluxe to fit in the original lenses.

I'm a little worried about visibility - I dont know which LED's to use and how many. I can get 10mm, 8mm, 5mm & 3mm Super bright red LED's then the normal bright LED's in the same sizes but more colors (for reverse and indicator lights)

Has anyone done a simillar conversion or have any ideas on visibilty of the different types of LED's, ideas on reflectors (neccesary or not), layouts?

Thanks