Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

80 gl dash lights


  • Please log in to reply
11 replies to this topic

#1 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 02 August 2012 - 02:17 PM

i have a problem with my 80 gl, some of my dash lights stay on that shouldn't. they are my battery light near my volt meter, my park brake light, and my stop lamp lights. it has been like this since i bought the car and the original owner said when they were hooking up the fuel pump they shorted something out, they thought that might have been what caused this. i don't see how it could have because when i first got this car the fuel pump was running off of a toggle switch that was connected directly to the battery
(which i have since fixed).
what i would like to know is where is a likely place to look for the problem. i have checked, my alternator is working fine, so are my brake lights, it has a new battery and battery clamps, and running with no loads it sits at 14 volts steady

#2 skishop69

skishop69

    If it ain't broke, you're not trying.

  • Members
  • 941 posts
  • Puyallup

Posted 04 August 2012 - 12:16 AM

Sounds like the blew a power or ground to the cluster. You'll need schematics an d patience to get it out for testing.

#3 naru

naru

    1000+ Super USER!

  • Members
  • 1,818 posts
  • under the bridge

Posted 04 August 2012 - 08:16 AM

Get a new alternator.
Yours has a bad diode.

#4 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 04 August 2012 - 10:25 AM

Get a new alternator.
Yours has a bad diode.


i think your right i took a multi meter and turned it to ac volts and i am getting 45 ac volts at the battery. next stop new used alternator.

#5 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 04 August 2012 - 10:29 AM

Sounds like the blew a power or ground to the cluster. You'll need schematics an d patience to get it out for testing.

if i blew a power the lights wouldn't turn on at all. i was thinking more along the lines of a shorted out ground somewhere, at least for the park break light. i am not sure how the stop lamp lights work and what could cause them to malfunction. i am going to replace my alternator and see if that changes anything

#6 Gloyale

Gloyale

    It's a sickness

  • Members
  • 9,421 posts
  • Corvallis, OR PNW

Posted 04 August 2012 - 06:38 PM

check the charge light fuse.

#7 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 05 August 2012 - 10:30 AM

where is that?

#8 Cougar

Cougar

    Elite Master of the Subaru

  • Members
  • 6,340 posts
  • Anchorage

Posted 06 August 2012 - 09:35 AM

I think if the fuse for the alternator was bad then the warning lights wouldn't be able to turn on.

You should have less than .1 volt of AC voltage across the battery when the alternator is running and in good shape. Your alternator clearly is defective with 45 volts of AC. You may have to replace your battery also. Have it tested before you put in the new alternator to make sure it is ok. When you replace the alternator and if you find the warning lights are still on then I suspect you will need to replace the external voltage regulator also. There may be a bad blocking diode in it and it is allowing power to flow back to the warning lights and turn them on.

The warning lights are in the field circuit of the alternator so they can be in the test mode when you turn on the ignition and the engine isn't running. That allows current from the ignition switch to pass through the lights and to ground through the alternator field windings. When the alternator is running, the field is built up and back feeds power to the lamps. The lamp circuit now has no ground connection and the lights turn off until there is a problem with either the alternator or in the area the warning light is for.

Edited by Cougar, 06 August 2012 - 09:43 AM.


#9 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 06 August 2012 - 10:11 AM

:cool: thanks for the info i will look into that. i think my battery is good it came out of my legacy and it worked fine then. i am defiantly going to replace my alternator i will grab an external voltage regulator while i'm at it also.

#10 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 28 November 2012 - 11:47 AM

Voltage regulator was the problem

#11 ivans imports

ivans imports

    1000+ Super USER!

  • Members
  • 2,950 posts
  • lumby bc canada

Posted 28 November 2012 - 12:07 PM

there are some inline fuses under the collum that are for charging and feul pump lights ect on 80 cars

#12 mikaleda

mikaleda

    1000+ member!

  • Members
  • 1,424 posts
  • priest lake, Idaho

Posted 28 November 2012 - 01:19 PM

Lights went off when I unplugged the voltage regulator




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users