Hey guys Ive been doing work in the field off and on for something like 8 years or so. Anyway Im a pretty decent tech in certian areas of the trade but have some down falls when it comes to troubleshooting. I can do pretty good electrically with power coming in but low voltage and t stat wiring seem to hang me up. I would like to learn some more maybe to help me. Any ideas on what books are out there that could give me a hand?