Supra won't start completly nothing is coming on
 

Not even dash lights come on. Now there is power to the starter but dont know my next step.

What year is your car? On the MKIII (86.5-92) there is a fusible link in the engine bay fuse box which can cause this. It's on the far left side and labeled "100A Alt"... in the earlier MKIII's it looks like a regular piece of wire, but it its not and needs to be replaced with either the sealed FL that was used in later models or a new, old-style FL wire.

Its a 87 Ok I'll look for that wire and see whats up with it Thanks for the help

i had the same problem, try replacing the alternator fuse.