I have a thermal arc 181i , 3-1 welder. Looking to doing some tig welding of mild steel tomorrow. Just gathering info as I've never used the tig function yet. Does this torch have a arc finger control or is it just on/off?
Seems like its just a one click on button.
On the 8 pin plug there is just 2 pins inside the plug.

Base of dinse plug #

Torch handle #