aircon

[jet1749]

Had the surf for a couple of weeks and getting round to a few common jobs. Changed the speedo face to mph and got rid of the awful speed dinger at the same time, working up the courage to flush the cooling system (have made up a bleed valve to vent the airlocks out of the system) Still trying to sort the aircon out, trouble at the moment is the aircon compressor clutch dosn't energise, checked out the electrical feed but its not live. Checked it out with the heater fan on, no luck, but the aircon switch lights up. Checked the 10A and 30A fuses behind the glovebox ok. Looks like it could be low on refrigerant. I've had a look for a sightglass in the compressor lines but can't find one. I am presuming that it has been running on R12, anyone got any experience on what is needed to convert to R134A and a typical cost.