Voltage Regulator Rectifier for Yamaha TX 500 | XS 360 400 500 | RD 400 1973-1982 | 371-81910-10-00 1A0-81910-20-00

KEY FEATURES
 

Brand new aftermarket voltage regulator rectifier

Plug-and-play unit, direct fit, easy to install

The quality exceeds the OEM equipment

All items pictures are accurate

All products shipped are tested

DESCRIPTION

 

This solid state voltage regulator/rectifier replaces the separate voltage regulator and rectifier units used on many of the listed models. It should be a direct plug in to replace both units.
The wire color and function is as follows:

  • 3 White - stator AC in (no polarity, connect in any order)
  • Black - Battery negative (ground)
  • Red - Battery positive
  • Brown - Keyswitched positive (field coil constant positive)
  • Green - Field coil regulation control (switched ground)

Battery condition is extremely important. No voltage regulator can work correctly with a bad or weak battery. Always fully charge your battery before performing any charging system tests or replacing parts. If there is any doubt, have the battery load tested or replaced.

Brand new aftermarket voltage regulator rectifier

  • Direct replacement to your original unit.
  • Plug-and-play, direct fit, easy installation.
  • No assembly required
  • Higher grade of electric components.
  • The quality exceeds the OEM equipment
  • All products shipped are tested

We have even included the opposite connector (main harness side) as we know these are often melted corroded defective and a major cause for repetitive electrical issues.

All item pictures are accurate, if in doubt do not hesitate and compare our item to your original part.

Vehicle models fitment

 

Yamaha RD 400 -- 1976-1979
Yamaha TX 500 -- 1973-1974
Yamaha XS 360 -- 1976-1977
Yamaha XS 400 Carb -- 1977-1981
Yamaha XS 400 SJ Carb -- 1982
Yamaha XS 500 -- 1975-1978

OEM part replacement

 

371-81910-10-00
371-81910-11-00
2G7-81910-50-00
1A0-81910-20-00
1A0-81970-60-00
1L9-81970-20-00
1L9-81970-60-00
1A0-81970-20-00
1LP-81970-50-00

Specifications

 

Dimensions:
Width: 72 mm
Length: 81 mm
Height: 29 mm
Wires length: 260 mm
Fixation holes center to center: 60 mm

Other specifications:
Number of plugs: 2
Number of pins: 7
Number of wires: 7
Minimum Charging Voltage: 14.5 V +- 0.5 V
Maximum Charging Current: 50 A / 500 W
Open Circuit Voltage: 15 V
Operation Temperature: -20? to 85?

instructions

 

Before installing your new voltage regulator rectifier:

  • Check the AC output of the stator.
  • Replace any burned or corroded connectors on stator and regulator rectifier.
  • Check and repair any melted wiring.
  • Use hi-temp dielectric grease on all connectors.