Did you look over the top of the engine bay/ firewall area, directly over/above the air cleaner..

 

Not sure just what we are planning, but if you were going to add R12 you should use the low side. If ,however, you are planning to switch over to R134A you will need to remove the compressor to drain the oil out anyway and maybe then you can make some changes if necessary. This may be more than you want to get into, I don't know.
The lo side port should be on the low side line somewhere, you just need to trace it until you find the port.It should be between the evaporator outlet line and the compressor.

 

The sight glass is on the pas side next to the battery, the high port is on the other side behind the headlight.

 

Yep, traced the line from the compressor up over the top and all the way to the other side.

 

Was going to retrofit it, but an old friend has some r 12, probably will just recharge. if I can find the port

 

Even pulled the doghouse so I could look from the back side.

 

Is this the low port? It is between the evaporator and the compressor. With the kit I bought, the fitting that will screw on that is too big for the recharge hose. Did they screw up the kit?

 

Try again with the picture, when I click on the picture, it just goes black.

 

That looks to be between the comp and condenser, that would be the HP port.

All OE lines?

Less desirable option,, you could pull the cycling switch, and if your adapter installs on the port, S/B 7/16 male same as the low/ suction port, and bridge the low/cycling connector to run the comp and pull in a 'light' measured fill at the switches shrader connection. Add a little at a time re installing the switch and checking cycling pressure on the high side.. Not as accurate as watching both gauge values..

I thought it was on the overhead lines near the air cleaner top, but if it's not on the accumulator body, near the Evaporate case, or a line extending back to the comp, anyone's guess...

 

All OE lines. Maybe I will just quit on it. I have two kits. On one the fitting that fits the recharge hose screws on the port in the picture. In the other kit, the fitting that works on the recharge hose, is too big to screw on that port. How are you supposed to know?
That port is between the condenser and compressor, so is that the high port?