Where is the dash A/C port on a 2003 Marquis C12

[John Hennessey]

I'm trying to find the dash A/C port on my 2003 Marquis Sapphire?  Anybody know?

[steve zannella]

John
my 2004 marquis low side port is on the drivers side firewall the only way I could get to it was stand up facing the passenger firewall and reach over the generator housing. My coach didn't have a high side.

Steve

[Gerald Farris]

John,
Most of the 2003 Marquis coaches had their A/C service valves located between the front cap and the firewall, above the generator opening and to the driver's side.

Gerald  

[John Hennessey]

Is there a way to get the the low pressure port from the generator side or do you need to access through the dash. I found the high pressure port above the generator slightly toward the passenger side

[Gerald Farris]

John,
The low pressure port is located in the same area. The service ports are never accessed through the dash on any Beaver that I have ever seen.

Gerald

[Tim Bentley Co-Admin]

The first time I had the air serviced on my 03 marquis the service tech added a set of ports in the engine compartment at the compressor.  It only took him a couple of minutes and did not cost much.  The ones in the front are difficult to get to if you can find out where they are.