Is there any guide or writeup available abotu resoldering the points in the ecu that commonly mess up? My horn doesnt work, my idotlight/clock doesnt work, and id like to fix them.

 

I'd suggest downloading the fsm and reading the Electrical Body section and getting familiar with where the different parts are located. The ones above are not in the ECU but honorable mention of those parts is made in one of the first threads on this second generation site. It's called FAQ or something similar.

 

Your right about it not being ecu but all the faq says is:

My clock/idiot lights don't work correctly or the clock doesn't hold memory when the key is off
Probably the fuse is blown or you have cold solder joints on the clock/idiot light panel.

My horn doesn't work
Probably bad solder joints in the CPU


but is there any specific guide that states exactly how to fix these 2 problems??

 

http://www.johnr.com/rx7faq/faq3.html