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Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Jcparmley on January 17, 2023, 07:59:05 AM

Title: MCI 102c3 No headlights or Brake Light
Post by: Jcparmley on January 17, 2023, 07:59:05 AM
Hello All
I have been working on getting my bus back on the road after sitting for over a year. I've had air leaks, no power to the main switch and dash, and no headlights and break lights.

I fixed the air leaks. Got the dash power back by manually activating the master relay. But I still don't have headlights. Low beam and high beam. I do not get the brake light on the dash. I tried switching the ice cube relay but that didn't work. My electric schematic is blurry and difficult to read so I am having trouble following the circuit. You're thoughts?
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: luvrbus on January 17, 2023, 08:18:41 AM
On Tom's C-3 the head lights and brake lights are pull from the Vanner above the starting batteries, if you have the center tap for 12 v if you hook it up wrong it will blow the lights  check your bulbs 1st to rule those out ,if you have 12+ volts at the plug with a meter then the headlights are shot 
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: chessie4905 on January 17, 2023, 09:24:56 AM
If no luck there, check dimmer switch. They can act up from extended sitting. Cycle several times to see if the issue.
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: luvrbus on January 17, 2023, 09:59:41 AM
Did you get the brakes released? nothing to do with the lights but was wondering? 
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: niles500 on January 18, 2023, 10:41:24 AM
Did you reset circuit breaker on vanner?
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: Jcparmley on January 18, 2023, 06:24:45 PM
I did not reset the breaker on the vanner.  I will try that.

Quote from: niles500 on January 18, 2023, 10:41:24 AM
Did you reset circuit breaker on vanner?
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: Busted Knuckle on January 20, 2023, 11:10:56 AM
That was my thought too Niles!
;D  BK  ;D
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: Tedsoldbus on January 22, 2023, 02:35:37 PM
When my headlights died, it was the foot dimmer switch. And NAPA had one! I thought that would be a junk yard easter egg hunt. I miss those old things. Wish I had one in my F 150.
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: chessie4905 on January 22, 2023, 03:55:50 PM
easy to add one. Just do it.
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: tr206 on January 22, 2023, 05:46:10 PM
FYI Brake lights won't work without air either if you didn't already know.
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: Busted Knuckle on January 24, 2023, 12:39:37 PM
Quote from: tr206 on January 22, 2023, 05:46:10 PM
FYI Brake lights won't work without air either if you didn't already know.

Not ALWAYS true! Many times brake lights won't go out w/o air to release the brakes!
;D  BK  ;D
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: tr206 on January 24, 2023, 04:53:38 PM
Quote from: Busted Knuckle on January 24, 2023, 12:39:37 PM
Not ALWAYS true! Many times brake lights won't go out w/o air to release the brakes!
;D  BK  ;D
I guess you got me there. But you still need air for them to work one way or the other.
Title: Re: MCI 102c3 No headlights or Brake Light
Post by: Busted Knuckle on January 27, 2023, 09:18:47 AM
Quote from: tr206 on January 24, 2023, 04:53:38 PM
I guess you got me there. But you still need air for them to work one way or the other.

And on that you are 100% correct!
:D  BK  :D