News: Putting FUN and FRIENDLINESS, FIRST into owning and learning about AMC small bodied cars, primarily Eagles, Spirits and Concords as well as vehicles built in AMC's Mexican subsidiary, VAM.

The AMC Eaglepedia can now be accessed using the buttons found below  This is a comprehensive ever growing archive of information, tips, diagrams, manuals, etc. for the AMC Eagle and other small bodied AMC cars. 

Also a button is now available for our Face Book Group page.


Welcome to the AMC Eagles Nest.  A new site under "old" management -- so welcome to your new home for everything related to AMC Eagles, Spirits and Concords along with opportunities to interact with other AMC'ers.  This site will soon be evolving to look different than it has and we will be incorporating new features we hope you will find useful, entertaining and expand your AMC horizons.

You can now promote your topics at your favorite social media site by clicking on the appropriate icon (top upper right of the page) while viewing the topic you wish to promote.


  • May 29, 2024, 02:38:14 AM

Login with username, password and session length

Author Topic: Clock only works when headlight switch is ON (heads or park lights). WTF  (Read 3693 times)

0 Members and 1 Guest are viewing this topic.

Offline 86Woodgrain

  • Administrator
  • Eagle
  • ******
  • Posts: 137
  • Thumbs Up 8
So the fancy digital quartz clock works but it only works when the headlights or park lights are on. It always restarts at 12:00 at that point too.

Does anyone have a clue as to why that would be? Is the clock somehow wired wrong?? I don't notice any other electrical gremlins with the dash.

Offline atmafox

  • Mad Engineer
  • Eagle
  • **
  • Posts: 112
  • Thumbs Up 8
Happens on mine as well.  Seems like it's not getting constant 12V, only dash illumination.  Haven't gotten to dig into this part yet but suspect there's something loose or disconnected back there.
Mine:
- 1980 AMC Eagle 2dr Sedan
- 2009 BMW 335i xDrive Coupe

Ours:
- 1986 Toyota Pickup

Hers:
- 1988 Toyota Supra Turbo
- 1988 Toyota Celica All-Trac
- 1997 Toyota RAV4 2dr 4x4

His:
- 1985 Nissan 720 Pickup Deluxe King Cab 4x4

Offline Freeagle

  • Eagle
  • **
  • Posts: 28
  • Thumbs Up 7
Sounds like somebody crossed the wires for the clock power and the clock illumination.
1984 Eagle Limited Wagon

Offline AMC of Houston

  • The only thing we learn from history is that we don't learn from history.
  • Global Moderator
  • Eagle Sundaancer
  • *****
  • Posts: 898
  • Thumbs Up 86
    • American Motors Club of Houston
The clock circuit is weird on the '79-up AMC's.  The main clock feed is via the 10A clock/dome light fuse.  However, the main feed when the lights are on is via the tail light circuit (its not just a dimmer circuit triggered by the lights).  So, if your dome lights are also not working, check that fuse.

Note there was an AMC TSB issued back then due to rampant misdiagnosis and too many good clocks being replaced under warranty, when the issue was just a popped fuse!
George G.
'81 Eagle Sundancer
'85 Eagle Waggie
1960 1902 Rambler Replica
'64 American
'70 AMX (Big Bad Blue), '70 AMX (White)
'77 Gremlin
'78 Pacer Coupe, '78 Pacer Wagon
'79 Pacer Wagon
'73 Jensen Interceptor
'86 Audi 5000 Turbo
'98 Aston Martin DB7
'09 Nissan Titan
'10 Nissan Maxima

Offline 86Woodgrain

  • Administrator
  • Eagle
  • ******
  • Posts: 137
  • Thumbs Up 8
My dome light works.

Offline 86Woodgrain

  • Administrator
  • Eagle
  • ******
  • Posts: 137
  • Thumbs Up 8
Re: Clock only works when headlight switch is ON (heads or park lights). WTF
« Reply #5 on: January 23, 2022, 04:39:38 PM »
FYI just an update in case anyone experiences the same issue.

I fixed mine by replacing it with the one from my parts car. I didn't need to change any wiring or anything, I just swapped it and it works like it should. So the clock itself was defective internally somehow.

 

SMF spam blocked by CleanTalk