The regulator/rectifier is a semiconductor device; using different testers will result in different readings. Also using a different range (scale) with the same tester will result in different readings.
The Honda workshop manual for the NTV 650 Revere gives the reading values obtained using the Kowa 07411-0020000 digital multimeter on the RX100 scale. The values obtained with the DT-182 and DT9806 digital multimeters were measured by me instead. I repeated the measures using two different scales on both multimeters:
| Digital multimeter | Ranges to be used | |
|---|---|---|
| Kowa 07411-0020000 | RX100 | |
| DT-182 Mini | 200K | Diode |
| DT9806 | 200kΩ | Diode |
The regulator/rectifier connectors are behind the right side cover.
The female connectors are attached to the wire harness and to the generator.
| (+) Probe | (-) Probe | Reading |
|---|---|---|
| Red/White | Green | Battery voltage: fully charged 13.0~13.2, undercharged if < 12.3. |
| Yellow | Yellow | Alternator coils: 0.1~1.0 Ω at 20 °C |
| Yellow | Ground | No continuity |
The male connectors are attached to the regulator/rectifier.
| Kowa | DT-182 | DT9806 | ||||
|---|---|---|---|---|---|---|
| (+) Probe | (-) Probe | RX100 | 200K | Diode | 200kΩ | Diode |
| Red/White | Green | 5~30 | 32.3 | 32.6 | - | |
| Red/White | Yellow 1 | 1~20 | - | - | ∞ | |
| Red/White | Yellow 2 | 1~20 | - | - | ∞ | |
| Red/White | Yellow 3 | 1~20 | - | - | ∞ | |
| Green | Read/White | ∞ | 32.2 | 32.5 | - | |
| Green | Yellow 1 | ∞ | - | - | 518 | |
| Green | Yellow 2 | ∞ | - | - | 518 | |
| Green | Yellow 3 | ∞ | - | - | 518 | |
| Yellow 1 | Read/White | ∞ | - | - | 518 | |
| Yellow 1 | Green | 1~20 | - | - | ∞ | |
| Yellow 1 | Yellow 2 | ∞ | - | ∞ | ∞ | |
| Yellow 1 | Yellow 3 | ∞ | - | ∞ | ∞ | |
| Yellow 2 | Read/White | ∞ | - | - | 518 | |
| Yellow 2 | Green | 1~20 | - | - | ∞ | |
| Yellow 2 | Yellow 1 | ∞ | - | ∞ | ∞ | |
| Yellow 2 | Yellow 3 | ∞ | - | ∞ | ∞ | |
| Yellow 3 | Read/White | ∞ | - | - | 518 | |
| Yellow 3 | Green | 1~20 | - | - | ∞ | |
| Yellow 3 | Yellow 1 | ∞ | - | ∞ | ∞ | |
| Yellow 3 | Yellow 2 | ∞ | - | ∞ | ∞ | |