Connector & color-code reference — Digi-Star · Weigh-Tronix · EZ Mate
Set the meter to ohms (Ω): red lead to V/Ω/mA, black to COM. Measure with the harness disconnected from the indicator. Values are per single bar — isolate one bar at a time at the J-box on a multi-bar system.
Avery Weigh-Tronix 5-pin
| Terminal | Color | Pin position |
|---|---|---|
| + Excitation | Green | B — 2 o'clock |
| − Excitation | Black | D — 7 o'clock |
| + Signal | White | C — 5 o'clock |
| − Signal | Red | A — 12 o'clock |
| Ground / Shield | Bare / Orange | E — 10 o'clock |
| Ohms check | Pins | Expected |
|---|---|---|
| Signal (output) | Red – White (A–C) | 360 Ω ± 5% |
| Excitation (input) | Green – Black (B–D) | 360 Ω ± 5% |
| Short to ground | Any pin – E / body | Open (∞) |
5-pin face read from the cable end — A-Red, B-Green, C-White, D-Black, E-Shield. Face the notch at 12 o'clock.
Digi-Star 4-pin
| Terminal | Color |
|---|---|
| + Excitation | Red |
| − Excitation | Black |
| + Signal | White |
| − Signal | Green |
| Ground / Shield | Bare / Orange |
| Ohms check | Colors | Expected |
|---|---|---|
| Excitation (input) | Red – Black | 350 Ω ± 5% |
| Signal (output) | Green – White | 350 Ω ± 5% |
| Short to ground | Any wire – body | Open (∞) |
EZ Mate Digi-Star variation
| Terminal | Color |
|---|---|
| + Excitation | Red |
| − Excitation | Black |
| + Signal | White |
| − Signal | Green |
| Ground / Shield | Bare / Orange |
| Ohms check | Colors | Expected |
|---|---|---|
| Excitation (right side) | Red – Black | 350 Ω ± 5% |
| Signal (left side) | Green – White | 350 Ω ± 5% |
| Short to ground | Any wire – body | Open (∞) |
Which brand? 5-pin round plug (notch at 12 o'clock) → Avery Weigh-Tronix. 4-pin → Digi-Star. EZ Mate connector → usually a Digi-Star variation. Common connectors you'll see: Amp, EZ Mate, and 5-pin.
Colors and ohm ranges transcribed from the CC Scales scale-kit installation guides (Ohms Test & Color Codes). Always confirm against the spec sticker on the specific bar.