916 Regulator Rectifier

Discussion in '748 / 916 / 996 / 998' started by maxwan, Jun 28, 2025.

  1. Hello .
    Need to ask a question that I can't seem to find the answer to ,
    Hope someone hear can help .
    Can a 3 phase reg/rectifier be used on a 2 phase ?.
    I have a 916 with the two yellow wires and a think it's had its day .

    IMG_20250605_105002.jpg
     
  2. yes it can, but memory shot @Derek @chrisw will remember i think plus searches on this forum will also reveal the answers you are looking for (v. lucky escape by the way!) - often the connector(s) failing due to corrosion/inability to allow current to flow without overheating, are as much to blame for the breakdown rather than just the rectifier - ditto alternator connectors.
     
  3. Also best to replace the yellow wires with thicker gauge, as far back to the alternator as possible.
     
    • Like Like x 1
    • Agree Agree x 1
  4. I replaced the wires all the way back to the stator with 2.5mm squared. The stator can't take a thicker gauge. I also got rid of the troublesome connector and used a new R/R with larger spade connectors like the Shindengen has. Any 2 of the 3 R/R connections work with a single phase alternator.
     
  5. Thanks chrisw , Chris , 98sps ,petsmith .
    Question for chrisw .
    If I purchase the rectifier in your link which wires go where?
    Bought 10agw cable and cut the old back to the stator already soldered . Just bought a second hand r/r but it had 3 yellows so that's where I'm at.
    I may do the yellow redundant thing . Then upgrade it to a MOSFET over the winter.
    Thanks guys
     
  6. The grey connector has 3 connectors - for the yellow stator wires
    The black connector has 2 connectors (the one nearest the grey one is +ve) - to the battery
     
    • Like Like x 1
  7. Thanks Chris . Much appreciated
     
  8. Thank you
     
  9. Just to confirm what Chris says:
    Shindengen Connections.jpg
     
    • Like Like x 1
    • Useful Useful x 1
  10. This thread title reminds me of my time om the triumph 675 forum and associated ownership.
     
  11. Where I learnt all about Mosfet R/R mods, long before Triumph did the recall to replace all the 675 R/Rs.
     
    • Agree Agree x 1
Do Not Sell My Personal Information