Before anybody tell me to use the search function, I've already done that and it seems most of the information it returned was pertinent to people wiring aftermarket tachs directly to the coil on cars not equipped with a factory tach. I have a 92 si hatch which has a factory tach and I am looking to splice the signal wire for that into my aftermarket datalogger, if anybody could tell me what color wire I'm looking for that would make this whole ordeal much quicker and easier for me. Thanks in Advance.

 

Completely BLUE wire