How do I connect the Cortex EBC to the PCM and Speed Sensor Adapter V2 in my 1986-1987 Mustang GT 5.0L? (SIRHC LABS 1987 Mustang GT 5.0L Cortex EBC Instruction Guide)

Answer

manuals.plus

Feb 28, 2025 - 10:54 PM


To connect the Cortex EBC to the PCM, follow the instructions provided in the manual. The Cortex EBC wiring harness can be connected to the 60-pin PCM connector as outlined in the table below:

CORTEX SIGNAL | CORTEX WIRE COLOR | PCM SIGNAL | PCM PIN | PCM WIRE COLOR
+12V Power | Red | Switched PCM Power | 37 | Red
Ground | Black (x2) | Connect to Chassis Near EBC | N/A | N/A
Engine Speed | Pink | Cam Position Signal (PIP) | 56 | Dark Blue
General-Purpose | Orange | Throttle Position | 47 | Dark Green / Light Green

For accessing the vehicle speed signal, the Speed Sensor Adapter V2 needs to be connected. Locate the wiring harness connector behind the kick panel in the driver's side footwell near the door. Look for a black connector with 8 pins. On one edge of the connector, you will find an orange/yellow wire and a dark green/white wire. Connect these wires to the Speed Sensor Adapter V2 as follows:

SPEED SENSOR ADAPTER V2 | SIGNAL | SPEED SENSOR ADAPTER V2 | WIRE COLOR | CRUISE CONTROL SIGNAL | CRUISE CONTROL | WIRE COLOR
Sensor IN+ | Green | Vehicle Speed Signal + | Dark Green / White
Sensor IN- | Blue | Vehicle Speed Signal - | Orange / Yellow
- | - | Output | White | Vehicle Speed | Green

Make sure to connect the Speed Sensor Adapter V2 to the same power and ground source as the Cortex EBC if desired.

Please refer to the manual for any additional instructions or troubleshooting steps.