Thanks, that looks a bit easier to try. A second question that is burning in my mind, although I don't ever really use it, my TJ is equipped with AC but it isn't really cold (or at all) so I was thinking that as long as I had everything apart I'd also replace my AC condenser. Here my concern is with discharging and then recharging the system, I don't even know for sure that it's really all that charged as I said that it has never really been cold at all since I've had the Jeep. Having never really looked into why, I find myself now wondering about the cost of a new condenser and then the re-charge and a fingers crossed that nothing else in the AC system, i.e. something is broken or not operating correctly. In either case, I still need to discharge to disconnect and get the heater box out. Is there a kit ? something simple ? I know I need some special tools to disconnect the lines, some have suggested some from Harbor Freight ? anyone have another suggestion or model number etc. ?