Hi there, I've bought a R-12 a/c recharge kit from Pep Boys. However, the connector doesn't fit my 1991 Accord. The low (pressure) side valve of my car (near the firewall) appears to be smaller in diameter. It's strange tat this kit claims to fit all R-12 systems. Maybe only for domestic cars? Can some kind souls give me some light one this? Where do I find the right tools or adapter to do the job? Thanks. Weiheng