Author Topic: 1982 CB650SC - Silicon Rectifier Diode/Relay  (Read 503 times)

0 Members and 1 Guest are viewing this topic.

Offline papi_sosaa

  • Millennial
  • Enthusiast
  • **
  • Posts: 138
1982 CB650SC - Silicon Rectifier Diode/Relay
« on: June 18, 2022, 07:50:54 AM »
Has anybody replaced their silicon rectifiers? If so, what did you use? Did you bypass it with something else?

The silicon rectifier in my harness is shot and needs to be replaced. The connector looks like it needs to be replaced as well.

Wondering if it can be bypassed or if a simple 2-pin relay from a parts store can be used.
1982 Honda CB650SC Nighthawk Cafe Racer

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 14,994
  • CB500 Number 1000036
Re: 1982 CB650SC - Silicon Rectifier Diode/Relay
« Reply #1 on: June 18, 2022, 08:31:11 AM »
You cant replace any diode with a relay
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline fizzlebottom

  • Hot Shot
  • ***
  • Posts: 463
Re: 1982 CB650SC - Silicon Rectifier Diode/Relay
« Reply #2 on: June 18, 2022, 09:10:29 AM »
https://www.partzilla.com/product/honda/31700-124-003?ref=ee59c7a75ad6f3e074266ce599cca78503064cae

To connect it, you could probably just cut the connector off and attach a homemade pigtail with spade connectors and some heat shrink.
1982 CB650SC Nighthawk
2024 Kawasaki Z900RS

Offline papi_sosaa

  • Millennial
  • Enthusiast
  • **
  • Posts: 138
Re: 1982 CB650SC - Silicon Rectifier Diode/Relay
« Reply #3 on: July 14, 2022, 09:35:55 PM »
Found the part on eBay, the little sucker is smaller than the bad one I replaced. All said, it’s installed and I was able to crank the bike.

1982 Honda CB650SC Nighthawk Cafe Racer