Wiring diagrams for Elite ECUs and harnesses use one- and two-letter codes to save space. Once you know the key, you can match any wire in a diagram to the wire in your hand.
The codes
| Code | Color | Code | Color |
|---|---|---|---|
B | Black | O | Orange |
BR | Brown | P | Pink |
G | Green | R | Red |
GY | Gray | V | Violet |
L | Blue | Y | Yellow |
W | White | (SHD) | Shielded cable |
Note that blue is L, not B. B is black, which is the mix-up we see most often.
Reading two-color wires
When a wire has two colors, the first code is the main insulation color and the second is the stripe (tracer). So a wire shown as Y/B is yellow with a black stripe, and B/Y would be the opposite: black with a yellow stripe. They're different wires, so read the order carefully.
Shielded cable
(SHD) marks a shielded cable, used for noise-sensitive signals such as trigger and knock inputs. Terminate the shield only where the diagram shows it. Grounding it at both ends can create a ground loop and let in the very noise it's meant to block.
You'll find these codes on diagrams like drive-by-wire throttle wiring, fuel pump wiring and fuseblock assembly. More diagrams are on our wiring diagrams page.
