GE MASTR II wiring chart

Note: all wires # 26 unless otherwise stated.

Pin Color Function Pin Color Function
1 YEL + BRN DC Conv Ctrl 21 SHIELD Ctrl A -
2 SHIELD Mic Low 22 YEL + GRN Rcvr Pwr Amp
3 YEL + BLU Rcvr Mute 23 ORG SQ Disble
4 # 22 BRN Mic High 24 RED Ignition SW
5 YEL + GRY Spare 25 WHT PTT
6 WHT + GRN Chn Grd Disbl 26 YEL + VIO Blanker Disbl
7 YEL + RED Spare 27 # 16 BRN Spkr Low
8 WHT + BRN F1 Select 28 # 16 GRN Spkr High
9 WHT + RED F2 Select 29 # 16 YEL 14 VDC A +
10 WHT + BLU F3 Select 30 # 16 BLK 14 VDC A -
11 WHT + VIO F4 Select 31 YEL F9 Select
12 WHT + GRY F5 Select 32 GRN F10 Select
13 WHT + ORG F6 Select 33 WHT Spare audio High
14 WHT + YEL F7 Select 34 SHIELD Spare audio Low
15 YEL + BLK F8 Select 35 ORG + BRN F11 Select
16 VIO Car Act Sens 36 ORG + RED F12 Select
17 GRY SQ Arm 37 ORG + GRN Spare
18 SHIELD VOL/SQ Low 38 ORG + BLU Spare
19 BLU VOL Arm 39 # 8 RED XMIT A +
20 GRN VOL/SQ Hi 40 # 8 BLK XMIT A -