Martin PD Hybrid Cable-Conductor Color Coding Variation
Escalation Article
Written by Anthony Williams
Updated at September 29th, 2026
Table of Contents
Brand:
- Martin
Model:
- PD Hybrid Cable
Summary:
Conductor color coding variation on Data- wire (grey shade) for Martin PD Hybrid Cable P/N MAR-91700020
Troubleshooting:
1 Inspect the conductor wiring for the PD Hybrid Cable:
Data+: Red
Data-: Grey (Note: Due to manufacturing shade variations, the grey wire may appear dark grey or brownish)
Ground: Braid shield (covered in black sleeving)
2 Verify pinout continuity according to the installation specification. The color variation is cosmetic (shade difference) and does not impact electrical performance or data transmission.
If the procedure above did not resolve your issue, please contact HARMAN Support for next steps.