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
- - - - -

Where are the headlight relais?


  • Please log in to reply
7 replies to this topic

#1 stickedy

stickedy

    USMB is life!

  • Members
  • 178 posts
  • Kronach/Bavaria/Germany

Posted 29 September 2006 - 07:16 AM

Could be a dumb question, but where are those headlight relais? My right headlight is very dim, so I guess a failed relais is the cause as I read this here in many threads. Because I have at least 3 donor cars, I would have enough relais here, but I don't know how they look and where they are. Thanks!

#2 kayakertom

kayakertom

    Eat, Live, Breath Subaru

  • Members
  • 325 posts
  • Lake Oswego

Posted 29 September 2006 - 11:39 AM

The relays are behind the dash display for ea82, They are circular/button like in shape. Have you checked your headlight ground wires?

Could be a dumb question, but where are those headlight relais? My right headlight is very dim, so I guess a failed relais is the cause as I read this here in many threads. Because I have at least 3 donor cars, I would have enough relais here, but I don't know how they look and where they are. Thanks!



#3 jacobs

jacobs

    USMB is life!

  • Members
  • 198 posts
  • IS, Colorado

Posted 29 September 2006 - 09:23 PM

I can almost guarantee you have a poor ground on your headlight.

#4 Cougar

Cougar

    Elite Master of the Subaru

  • Members
  • 6,340 posts
  • Anchorage

Posted 30 September 2006 - 01:11 AM

The problem may be with the relay which is located about in the middle of the dash. Look for a group of 4 relays mounted together. The middle ones are for the lights on each side of the car.

I would check the voltage getting to the headlight middle lead and ground before going after a relay. If the voltage on the wire is 12 volts with the light on then you have a bad ground and not a bad relay. If the voltage is low then replace the relay.

#5 hooziewhatsit

hooziewhatsit

    I fix old cars

  • Members
  • 1,333 posts
  • Klamath Falls

Posted 30 September 2006 - 01:29 AM

does anyone know exactly where the ground is for the headlights?

Probably have to trace the wire back from the relay to ground, since subaru's use a switched ground system, right?

(my 88 GL has the same problem, a dim passenger side headlight)

#6 Cougar

Cougar

    Elite Master of the Subaru

  • Members
  • 6,340 posts
  • Anchorage

Posted 30 September 2006 - 09:44 AM

The ground is made through the light switch. Before you start tearing into that you should first confirm that the ground is really the problem. First check the voltage on the middle lead to the lights while the lights are on. You should see 12 volts there with reference to a good ground. If you don't have proper voltage then check the relay for that side. Another thing you can do to prove the ground is to use a ground jumper tied to the outside leads of the light. If the ground is bad then the jumper should make the light work correctly and then you need to check the light switch connections to ground.

Be sure to check the connector to the light also for burned contacts as this is a commom failure point.

#7 Haight

Haight

    USMB Regular

  • Members
  • 279 posts
  • Seaside, OR

Posted 04 March 2013 - 02:42 PM

THREAD REVIVAL!

I have the same problem and I am pretty sure it is the ground..Anyone able to tell me where to look for the ground wire for the driver side headlight? 87 GL. Thanks



#8 Cougar

Cougar

    Elite Master of the Subaru

  • Members
  • 6,340 posts
  • Anchorage

Posted 04 March 2013 - 03:26 PM

Most of the time this kind of trouble is due to bad socket connections to the bulb. If one side of the lighting is ok then the connection ground for both sides is most likely ok though it is possible there could be a faulty connection between the two sides. To see if the connection to ground really is the trouble and not the bulb socket check the voltage to ground on the ground wire going to the dim light while the lights are on. If there is very little voltage on the ground wire then the ground is ok and the socket is the trouble. Also verify that full voltage is getting to the light.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users