| 32 pin | function | 55 pin | function | |
|---|---|---|---|---|
| A | Red-Pointer-a | A | NAV flag a | |
| B | Red-Pointer-b | B | ARINC ip a (white) | |
| C | Red-Pointer-c | C | Chassis b | |
| D | 115 vac a | D | ARINC ip b (red) | |
| E | ? | E | ? | |
| F | Compass-Card-a | F | DG solenoid +ve | |
| G | Compass-Card-b | G | ARINC mode ip | |
| H | n/c | H | n/c | |
| J | (Red drive) Jg-18.5 | J | n/c | |
| K | Green-Pointer-a | K | n/c | |
| L | Green-Pointer-b | L | n/c | |
| M | (Green drive) Com-Mg-487 | M | n/c | |
| N | n/c | N | n/c | |
| P | Rot-Heading G 26v a | P | ? | |
| R | Rot-Heading G 26v b | R | ? | |
| S | OP-Course-a | S | Resolver R1 | |
| T | ? | T | Resolver R3 | |
| U | n/c | U | Resolver R2 | |
| V | 115 vac b | V | GS galv a | |
| W | Com-Wg-476 | W | NAV flag b | |
| X | (C.Card error) Com-Xg-483 | X | ? | |
| Y | Compass-Card-c | Y | ? | |
| Z | ? | Z | ? | |
| a | Green-Pointer-c | a | ? | |
| b | ? | b | DG solenoid -ve | |
| c | (Green error) com-cg-18.5 | c | (Course knob) com-gc-17 | |
| d | OP-Course-b | d | (Course knob) com-gd-475 | |
| e | OP-Course-c | e | ARINC gnd (black) | |
| f | (C.Card drive) com-fg-476 | f | (Course knob) com-gf-194 | |
| g | Common-? | g | OP-Bug Y a | |
| h | Chassis-a | h | OP-Bug Y b | |
| j | ? | I | n/c | |
| j | n/c | |||
| k | GS galv b | |||
| m | Resolver S4 | |||
| n | Resolver S1 | |||
| p | CD galv a | |||
| q | To-From galv a | |||
| r | ? | |||
| s | ? | |||
| t | IP-Course a | |||
| u | IP-Course b | |||
| v | IP-Course c | |||
| w | ? | |||
| x | Main Flag solenoid +ve | |||
| y | Main Flag solenoid -ve | |||
| z | CD galv b | |||
| AA | Resolver S3 | |||
| BB | Resolver S2 | |||
| CC | To-From galv b | |||
| DD | Lamps a, 26v DC | |||
| EE | Lamps b, 26v DC | |||
| FF | Chassis | |||
| GG | GS flag a | |||
| HH | GS flag b | |||
| System Rotating Devices | Location | Purpose | Pins | Colour band | |
|---|---|---|---|---|---|
| SYNCHRO CONTROL | 1) | Course Knob/Bug | S,d,e,(P,R) | Green | |
| MOTOR GEN | 2) | Heading/Card motor | Int.Amp | ? | |
| SYNCHRO CONTROL | 3) | Green Arrow input | K,L,a | Orange | |
| SERVO MOTOR | 4) | Green Arrow motor | Int.Amp | ? | |
| SERVO MOTOR | 5) | Red Arrow motor | Int.Amp | ? | |
| SYNCHRO CONTROL | 6) | Red Arrow input | A,B,C | Brown | |
| CONTROL TRANSFORMER | 7) | Heading/Card input | F,G,Y,(g,h) | Yellow | |
| 30HZ RESOLVER | 8) | Course output | S,U,T,(n,BB,AA,m) | mauve wires | |
| SYNCHRO CONTROL | 9) | Course input | t,u,v | Black | |
| SYNCHRO CONTROL | 10) | Diff heading? | ? | ||
| GENERATOR | 11) | ??? | Int.Amp | ? |