Sorry, I am not sure your mean the follow item
1) Environmental Panel
WINDSHIELD RAIN REMOVE MS27753-39, 12TW1-50 is on(mom)-on-on http://sensing.honeywell.com/product%20page?pr_id=33159
but i saw the game is on-on-on , 12TW1-10 is correct?
2) CMSP Panel
Systems switches 4x MS27754-5M connot find , I just find MS27754-39M HW 12TW1-50M on(mom)-on-on http://sensing.honeywell.com/product%20page?pr_id=33182
and MS27754-35M HW 12TW1-56M http://sensing.honeywell.com/product%20page?pr_id=33198 for on(mom)-on-on ,but i don't know the different between from 12TW1-50M and 12TW1-56M, what is defferent?
Which is correct?
3) The Antenna Select panel
IFF ANT MS24659-21E is on-off-on , but the game is use on-on-on input
Whether i can use MS27408-4A HW 2TL1-10A on-on-on maintained?
4) What different from non-maintained and maintained switch?
5) UHF UPPER MS27718-23 can not find, just find MS27718-23-1 HW 11TW1-3 on-on, but hte game is on-on-on input, which is correct ?
6) Environmental Panel
PITOT HEAT NSN 5930-01-008-6930 PART # A3-1127 can not find, where can i buy?
7) Environmental Panel
BLEED AIR SWITCH is use 1TL1-3D on-on Lock out of center position , why MAIN AIR SUPPLY SWITCH is use 1TL1-3F on-on Lock in extreme position?
8 ) I did not touch real A-10C switch, How can i know which side is Lock for each switch? How can i know use which switch such as Environmental Panel - BLEED AIR SWITCH, MAIN AIR SUPPLY SWITCH between from 1TL1-3D on-on Lock out of center position and 1TL1-3F on-on Lock in extreme position?