1993 Ford Thunderbird SC : no start :

It was a junk yard find, I think its called eec relay not sure, might be under ecm, but is the brown relay on the big fuse box under the hood, its right next to the green horn relay.

It solved alot of the problems with my car but im still fighting with an electrical problem, btw did you ever fix your tbird?. Let me know if you need some help

thanks for all your help !