Chopper Cache

Fitment, source notes & wire connections

1974 Yamaha XS650 PMA & Points Chopper

1974 · XS650 · Kick-only chopper / PMA / points

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CHOPPERCACHE / WIRING REFERENCE
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Community reference trace · By Choppercache

Wire schedule

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Diagram reference

An interactive Yamaha XS650 chopper wiring diagram based on a permanent-magnet alternator and points ignition configuration.

This diagram shows 15 components and 20 wire connections. The details below describe the saved diagram; they do not confirm compatibility with your machine.

Recorded fitment
1974 XS650
Configuration
Kick-only chopper / PMA / points
Circuits labeled in the diagram
Main, Grounds, Charging, Controls, Ignition, Lighting, Accessories

Components shown

  • BAT · Battery

    Negative grounded to frame

  • GND · Ground

    Battery negative return

  • FUSE-01 · Fuse

    Battery feed protection

  • FUSE-02 · Fuse

    Charging lead protection

  • PMA · PMA Stator

    Three-phase AC output

  • REG/REC · PMA Regulator / Rectifier

    3 AC in / DC out / ground

  • KEY · Key Switch

    Battery / accessory / ignition-on distribution

  • STOP · Stop Switch

    Ignition kill switch

  • COIL · Coil

    Points-style primary

  • POINTS · Points

    Mechanical breaker points

  • DIMMER · Dimmer Switch

    Two-position selector

  • HEAD · Headlight

    High / low beam

  • HORN · Horn

    Accessory horn load

  • HORN BTN · Horn Button

    Momentary switch to ground

  • TAIL · Tail Light

    Running lamp

Source notes

Community reference trace · Choppercache Community-inspired PMA and points configuration. Confirm the installed regulator/rectifier pinout before wiring. Recorded reference URLs: https://www.xs650.com/threads/wiring-74-xs-with-mikes-xs-pma-no-battery.56523/

Community reference trace · Choppercache

Publication note: Community-inspired PMA and points configuration. Confirm the installed regulator/rectifier pinout before wiring.

Limitations and checks

Community-inspired PMA and points configuration. Confirm the installed regulator/rectifier pinout before wiring. These recorded references do not establish that this circuit has been tested on your motorcycle. Match the installed components, polarity, terminal pinouts, wire sizes, and circuit protection to the relevant service documentation before applying power.

Verify your hardware pinouts, polarity, wire sizes, and component ratings before applying power.

Wire connections (20)
Wire connections recorded in this diagram
FromToGaugeColor
BAT · B−GND · GNDReference not shownBlack
BAT · B+FUSE-01 · BATReference not shownRed
FUSE-01 · LOADKEY · BATTReference not shownRed
PMA · AC 1REG/REC · AC 1Reference not shownGreen
REG/REC · DC +FUSE-02 · BATReference not shownRed
FUSE-02 · LOADBAT · B+Reference not shownRed
KEY · INGSTOP · IGN INReference not shownRed
STOP · COILCOIL · POS.Reference not shownBlue
COIL · POINTSPOINTS · POINTSReference not shownBrown
KEY · ACCDIMMER · INReference not shownRed
DIMMER · HIGHHEAD · HIGHReference not shownYellow
DIMMER · LOWHEAD · LOWReference not shownYellow
KEY · ACCHORN · PWRReference not shownRed
HORN · BUTTONHORN BTN · HORNReference not shownRed
HORN BTN · GNDGND · GNDReference not shownBlack
KEY · ACCTAIL · TAILReference not shownRed
TAIL · GNDGND · GNDReference not shownBlack
PMA · AC 2REG/REC · AC 2Reference not shownGreen
PMA · AC 3REG/REC · AC 3Reference not shownGreen
REG/REC · GNDGND · GNDReference not shownBlack
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What happened on real bikes?

This is a community reference. Match every part and terminal to your machine before applying power.

Community reference
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