Following is for 1986 Mustang SVO 2.3T Pin Color Function 1 Bk/O (permanent) Fused +12VE in 2 3 4 DG/Y Diagnostic feedback signal from TFI 5 6 7 LG/Y Engine Coolant Temperature 8 9 10 BK/Y A/C compressor clutch control 11 12 13 14 15 16 BK/O TFI GND 17 Y/BK Diagnostic Connector Output 18 19 20 BK GND ties directly to case. Vehicle side wires to chassis ( body) 21 GY/W switched GND ISCV Idle Air Control 22 T/LG switched GND fuel pump relay and diagnostic connector 23 Y/R Knock Sensor 24 25 LG/P Air Temperature before Turbo 26 O/W +5 Volt Reference to TPS,Barometer and Air meter 27 28 29 DG/P O2 sensor 30 BR/W Octane Switch input, advances timing about 10 degrees, permits higher boost via pin 32 31 32 BK/PK Turbo Boost Control 33 34 Check for DOL( document conflict for this pin ) 35 Y EGR control 36 Y/LG SPOUT to TFI 37 R (switched) +12V in from EEC power relay, same as pin 57 38 39 40 BK/LG GND direct from battery 41 42 43 W/BK Vane Airflow Meter 44 45 LG/BK Barometer 46 BK/W GND VAM/CTS/TPS/ATC 47 LG/P TPS (signal) 48 W/R Diagnostic Connector Input, Ground to start self test 49 O Chassis Ground 50 51 52 53 54 O/LB A/C Fan Control 55 56 DB PIP Hall Sensor on Distributor 57 R (switched) +12V in, same as pin 37 58 T/R switched GND Injectors for cyls 1&2 59 T/O switched GND Injectors for cyls 3&4 60 BK/LG GND in , same as pin 40