I want to get Avital 5103L keyless auto start units for our 2002 and 2000 Civics, but the quotes I've been getting are unaffordably high.

I'm an Electronics Research & Development Technician with an ASET ( Associate in Science in Electronics Technology ). Cant I install my own units?

Are there PDF install manuals somewhere, that I could look at, and get an idea?

Would Avital help me figure out what's needed for each car?