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Wiring question

Discussion in 'The Garage' started by HugoF, Nov 6, 2023.

  1. HugoF

    HugoF XS400 New Member

    So I swapped a motor into a 1980 Yamaha 400 XS. The bike has a cut wire harness in two places. One bundle is 4 multi color wired which matches to a multi wired plug coming from the engine. The other cable coming from the engine is three white wires in a 4 wire spade plug. What I think matches this is three black wires off the harness. How do I know which wire matches? Are they all grounds? Are these wires for the rectifier?
  2. drewpy

    drewpy Excess twin Top Contributor

    3 white wires are from the stator, the 4th is usually the neutral wire.
    No idea on the rest
  3. brookeadams13

    brookeadams13 XS400 New Member

    You should watch a video regarding this, and make yourself clear before plugging the wires

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