I have a Airco 251 AC/DC Heliwelder serial number M1209110 that I am going to put a Cobramatic feeder on and I need to know what the wiring schematic is for the remote pin connector where the foot pedal connects to the welder... Does anyone have a schematic that they can send me that shows the wiring order? I have an extra foot pedal that's worn out and i am going to use the cord off of it to connect the feeder to the Airco... Thanks... Tim