Can anyone tell me where the low side port is and the high side port is, I am an idiot when it comes to A/C systems, and im trying to retrofit. =p

 

No one knows?

 

On my 91 3.0 one is right in front over the coolant overflow tank. The other is at the firewall just above the Power Steering dipstick handle. It's been a while since I've connected to them but I believe that the front one is the low side. You'll know if you put a gauge on one with the compressor running.

A much cheaper option than a refit would be to use Freeze 12 or another like product. That's all I use anymore. They can't legally claim it can be used just like R-12 but it can, and I do.