Regulator Rectifier for Honda Magna VF700 & Shadow VT700 1985-1988
Regulator Rectifier for Honda Magna VF700 & Shadow VT700 1985-1988
SKU:RM30102
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Voltage Regulator Rectifier 50A - RM30102
Honda Magna VF 700 C and Shadow VT 700 C / VT 800 C - 1985-1988
The RM30102 is a brand new voltage regulator rectifier for the mid-1980s Honda V-twin and V-four cruisers, covering the Magna VF 700 C and the Shadow VT 700 C and VT 800 C from 1985 to 1988. It is a direct replacement for the original unit - plug-and-play, direct fit and easy to install, with no assembly required. The quality exceeds the OEM equipment, the heat sink and charging capabilities are improved on the original design, and a higher grade of electrical component is used throughout.
This is an eight-wire unit with two plugs and eight pins, supplied with two different wire lengths of 700 mm and 480 mm to reach the harness connectors in their factory positions. The body measures 80 mm wide by 108 mm long by 28 mm high, with 75 mm between the fixation hole centres. It is rated at a maximum charging current of 50 A / 500 W, a minimum charging voltage of 14.5 V plus or minus 0.5 V, an open circuit voltage below 15 V and an operating range of -20 C to 85 C. RMSTATOR also include the opposite connector for the main harness side, because the original plugs on machines of this age are commonly corroded or burnt and leaving a damaged one in place is a frequent cause of repeat faults.
Key Features
- Brand new unit, a direct replacement for the original
- Plug-and-play, direct fit, easy installation with no assembly required
- Quality that exceeds the OEM equipment
- Improved heat sink and charging capabilities
- Higher grade electrical components throughout
- Maximum charging current of 50 A / 500 W
- Minimum charging voltage of 14.5 V +/- 0.5 V
- Two plugs with eight pins across eight wires
- Two wire lengths of 700 mm and 480 mm to suit the factory routing
- Opposite connector for the main harness side supplied with the unit
Technical Specs
| Specification | Detail |
|---|---|
| Part number | RM30102 |
| Width | 80 mm |
| Length | 108 mm |
| Height | 28 mm |
| Wire lengths | 700 mm and 480 mm |
| Fixation holes, centre to centre | 75 mm |
| Number of plugs | 2 |
| Number of pins | 8 |
| Number of wires | 8 |
| Minimum charging voltage | 14.5 V +/- 0.5 V |
| Maximum charging current | 50 A / 500 W |
| Open circuit voltage | Below 15 V |
| Operating temperature | -20 C to 85 C |
Vehicle Fitment Guide
| Make & Model | Years |
|---|---|
| Honda Magna VF 700 C | 1985-1988 |
| Honda Shadow VT 700 C | 1985-1988 |
| Honda Shadow VT 800 C | 1985-1988 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 31600-MR6-000 | Honda |
| 31600-MK3-000 | Honda |
| 31600-MK7-008 | Honda |
Frequently Asked Questions
Does this fit without modification?
Yes. It is a plug-and-play, direct fit replacement for the original with no assembly required. The mounting holes are 75 mm apart centre to centre and the unit carries two plugs with eight pins, so those details are the quickest way to confirm the match against the part currently on the bike.
What is included?
The voltage regulator rectifier plus the opposite connector for the main harness side. That extra connector is supplied because on machines of this age the harness plug is very often melted, corroded or defective, and a poor connection there will cause the same charging fault to come back.
How do I know my old regulator has failed?
Measure the voltage across the battery with the engine running. A working system should reach a minimum charging voltage of 14.5 V plus or minus 0.5 V and stay below roughly 15 V. If the reading sits at resting battery voltage the unit has stopped charging; if it climbs well past 15 V the regulation has failed and the battery is being overcharged. Browned or melted connector housings are a strong supporting clue.
Why does it have two different wire lengths?
The eight wires are split between a 700 mm run and a 480 mm run so that both harness connectors reach their factory positions on these models without the loom being stretched or re-routed. That keeps the installation genuinely plug-and-play rather than requiring extensions.
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