[Boatanchors] Hy-Gain/Telex ProCom 200 Headset Help

[Chris Kepus]

Hi all,
Does anyone have an instruction sheet/manual for this great headset (circa
1980) that you could scan for me? I have it working on VOX with my SSB
Boatanchors, but want to wire it with a foot switch so I can use it with my
Valiant and DX-100.  

Sources already checked: current web search, Wayback machine search, QST
archives, Bama, Mods.dk, Hy-Gain, Telex, etc. etc.  

Will be extremely grateful for any help.

73,
Chris
W7JPG