Gregory Bender

Rectifier (diode board) connections

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Rectifier (diode board) as used on many Moto Guzzi models.
Rectifier (diode board) as used on many Moto Guzzi models.

Photo courtesy of Gregory Bender.

Rectifier (diode board) as used on many Moto Guzzi models.
Rectifier (diode board) as used on many Moto Guzzi models.

Photo courtesy of Gregory Bender.

Rectifier (diode board) as used on many Moto Guzzi models.
Rectifier (diode board) as used on many Moto Guzzi models.

Photo courtesy of Gregory Bender.

V7 Sport rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire
  • V terminal - Orange wire
  • W terminal - Green wire

The remaining terminals on the rectifier

  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Red wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to fuse box position 1; unfused side)
    • Red wire (to front distribution panel position 5; then directly to ignition switch terminal 30/30)
  • Mounting bolt - Black wire (to ground)

750 S rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire
  • V terminal - Orange wire
  • W terminal - Green wire

The remaining terminals on the rectifier

  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Red wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to fuse box position 1; unfused side)
    • Red wire (to front distribution panel position 5; then directly to ignition switch terminal 30/30)
  • Mounting bolt - Black wire (to ground)

850 T rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • IF PRESENT Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
  • Mounting bolt - Black wire (to ground)

750 S3 rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
  • Mounting bolt - Black wire (to ground)

850 T3 rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
  • Mounting bolt - Black wire (to ground)

850 T3 California rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

V1000 I-Convert rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

V1000 G5 rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

1000 SP rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

1000 SP II rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal -
    • Blue wire (to dash indicator light)
    • Blue wire (to fuse box position F4; fused side)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

850 Le Mans rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
  • Mounting bolt - Black wire (to ground)

Le Mans II rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

Le Mans CX 100 rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

Le Mans III rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal - Blue wire (to dash indicator light)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)

Le Mans 1000 rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal -
    • Blue wire (to dash indicator light)
    • Blue wire (to fuse box position 1; fused side)
  • B+ terminal - Red wire (to fuse box position 5; unfused side)
  • Mounting bolt - Black wire (to ground)

California II rectifier (diode board) electrical connections

The three terminals all in a row on the rectifier

Order amongst these three wires does not matter.

  • U terminal - Yellow wire (from alternator)
  • V terminal - Yellow wire (from alternator)
  • W terminal - Yellow wire (from alternator)

The remaining terminals on the rectifier

  • Y terminal - Blue wire (from alternator)
  • D+ terminal - Red wire (from voltage regulator)
  • 61 terminal -
    • Blue wire (to dash indicator light)
    • Blue wire (to fuse box position F4; fused side)
  • B+ terminal -
    • Red wire (to battery positive)
    • Red wire (to ignition switch)
    • Red wire (to fuse box position F5; unfused side)
  • Mounting bolt - Black wire (to ground)