WORKINPROGRESSWORKINPROGRESSWORKINPROGRESSWORKINPR OGRESS
Sequential turn signals, on my Avalon you say? Yes! after abandoning this project earlier, I came back to it. But instead of using Logic chips, I went the other route of microprocessor/PIC programming.
Functions are,
4 segment turn signal, chase or fill pattern. added a hazard pattern, and strobe lights too, why not, as they are LEDs.
Anyway.. Videos are better than pictures:
On car: (Only shows right turn, left works too)
On bench: (shows all functions)
First step was to built the controller for it:

Didnt work, so revision 2 came shortly after!
Only started documenting the front turn signal housings, which I pulled apart with MAP gas torch, and a screwdriver. I was impatenit (it was cold outside!) and chipped the lens.
Wow, I never thought being safe looked so sexy!
Drilled 42 holes in a peice of lexan, mounted LEDs, soldered in groups of 9. Also, attaching the transistors directly to the LED groups was a really, really dumb idea.
Module for other light (verses method mentioned above) The transistors simply act as small relays to turn on each LED segment, as the controller chip could never supply that much current.
Oh my, what a mess.
Messes, they dont stop!
Project boxes! (and RJ45, definitely Toyota OEM!)
There you have it folks, what you all have come to see...
Soon, more switches to control the functions. Then... the tailights! (gasp, he might be crazy enough to do it!)