« previous next »
Pages: [1]   Go Down

Author Topic: I was so close  (Read 353 times)

0 Members and 1 Guest are viewing this topic.

Offline redbaron

  • Full Member
  • *
  • Posts: 87
I was so close
« on: June 23, 2023, 04:33:28 PM »
1976 Honda 550F. With help from you guys I was able to get all electrics working. Bike was cranking with spark. Today I was installing new electronic ignition (Chinese). I connected the coil wires (yellow and blue) as instructed to new ignition. I wired the red (hot) wire from ignition to black (Hot) running to rear brake. I was about to set the timing by lining up the marks and using a test light. Then…nothing, no power to anything.  Battery check good, fuses good. I don’t know. I was thinking I could get it started today after installing ignition. I would appreciate any input.
Logged

Offline 70CB750

  • Labor omnia vincit improbus.
  • Really Old Timer ...
  • *******
  • Posts: 14,798
  • Northern Virginia
Re: I was so close
« Reply #1 on: June 23, 2023, 04:55:52 PM »
The power has to stop somewhere.  Get a multimeter and follow the power from the battery out. 

Second thought: check your grounds.  Ground had me puzzled few times. 


Good luck. 
Logged
Prokop
_______________
Pure Gas - find ethanol free gas station near you

I love it when parts come together.

Dorothy - my CB750
CB750K3F - The Red
Sidecar


CB900C

2006 KLR650

Offline Scootch

  • Hot Shot
  • ***
  • Posts: 361
  • Someday I'll know what I needed to know years ago
Re: I was so close
« Reply #2 on: June 23, 2023, 05:02:48 PM »
Press and hold the brake and see if you get ignition to come alive...
Logged

Offline calj737

  • Really Old Timer ...
  • *******
  • Posts: 21,020
  • I refuse...
Re: I was so close
« Reply #3 on: June 23, 2023, 06:33:44 PM »
Quote from: redbaron on June 23, 2023, 04:33:28 PM
I wired the red (hot) wire from ignition to black (Hot) running to rear brake. I would appreciate any input.
Why on earth would you choose to do this? BLK goes to the RH control. It becomes BLK/WHT to feed the coils.

BLK also feeds other things, but the ignition (key) switch moves power from RED to BLK, BRN, and BRN/WHT. Follow the stock diagram for reliability.
Logged
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Online scottly

  • Global Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,269
  • Humboldt, AZ
Re: I was so close
« Reply #4 on: June 23, 2023, 08:01:36 PM »
Quote from: calj737 on June 23, 2023, 06:33:44 PM
Quote from: redbaron on June 23, 2023, 04:33:28 PM
I wired the red (hot) wire from ignition to black (Hot) running to rear brake. I would appreciate any input.
Why on earth would you choose to do this? BLK goes to the RH control. It becomes BLK/WHT to feed the coils.

It is perfectly acceptable to provide switched 12V power to the electronic ignition module from the black wire that feeds the rear brake light. The coils still get 12V from the black/white wire through the kill switch. 
Logged
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline redbaron

  • Full Member
  • *
  • Posts: 87
Re: I was so close
« Reply #5 on: June 23, 2023, 08:50:15 PM »
Thanks Scottly, I wired it to rear brake switch black wire after reading many posts on this forum. Still don’t know why I don’t have any power anywhere.
Logged

Offline bryanj

  • Really Old Timer ...
  • *******
  • Posts: 13,979
  • CB500 Number 1000036
Re: I was so close
« Reply #6 on: June 23, 2023, 11:37:40 PM »
Fuse holder melted or fuse internal unattached, regular fault
Logged
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 redbaron

  • Full Member
  • *
  • Posts: 87
Re: I was so close
« Reply #7 on: June 24, 2023, 02:53:47 PM »
Bryanj nailed it, unattached fuse holder wire.  Fixed problem and full power! now installing elec ignition. Thanks bryanj
Logged
Pages: [1]   Go Up
« previous next »