need a diode for a Harley three wheel police bike. don't know any specs but is a 12 volt alternator system. diode goes between gen. and oil press. lights and the regulator. Harley no. 74559-65 is not to be found any where. please help.

  • what happened to your diode? can you show a photo to describe size – Tony Stewart Sunnyskyguy EE75 Feb 10 '18 at 16:55
  • not there when I got bike. it needed rewiring – jug Feb 10 '18 at 17:00
  • have you actually done any research on the internet? ... it shows up as a resistor/diode assembly and appears to be available – jsotola Feb 10 '18 at 17:04
  • any company name you can share with me? – jug Feb 10 '18 at 17:41
  • Active electronics, Future electronics, Digikey, Mouser , all have 'em many brands.. check local parts stores 1N4004 Diodes Inc 400V – Tony Stewart Sunnyskyguy EE75 Feb 10 '18 at 17:58

just about any diode to handle the load current of accessory.


Source found shows Diode and R in a sleeve. https://www.vintageindian.com/harley-1905-to-1966/servi-car-1932-to-1973/1965-to-1970-ge-harley-servi-car-74559-65-resistor/diode-assembly.html



  • a 2 cylinder scooter – Tony Stewart Sunnyskyguy EE75 Feb 10 '18 at 17:10
  • Ah...I guess I should have been more imaginative. – Jerry Coffin Feb 10 '18 at 17:11
  • "Some of us take the bike to work, some others take some darlington transistors, lamps, diodes, gates and transformer to work... engineers are magical creatures" – Harry Svensson Feb 10 '18 at 17:13
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    studded tires for winter. This is cool. I figured out how to watch 3 Olympic channels simultaneously on my big screen from the computer – Tony Stewart Sunnyskyguy EE75 Feb 10 '18 at 17:38
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    But if they're Darlington pairs, does that make it a 4-wheeler? – W5VO Feb 10 '18 at 17:52

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