This is my very first posting, so let's see how it goes...
I just got this really nice little 93 pickup extra cab with auto trans, and the cruise does not work. It appears to be a factory unit. No light, no Nothin!
I can't find a good schematic for it, so that makes troubleshooting a little difficult. Where does it get the power from?
All fuses OK.
Vacuum lines OK.
Brake switch OK.
Linkage OK.
Me? Not so much...

 

My experience with that style cruise control is they work great for about 20 minutes from brand new. Have you searched for cruise control on here? If you can't find it with a basic search if you go to google and search for your truck information with cruise control and yotatech you should find it.
Welcome to the forum and good luck

 

I put in these search terms:

93 toyota pickup auto cruise control yotatech

And this is what I got:

https://www.google.com/search?q=93+t...tatech&spell=1

Hope this helps