Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Results 1 to 18 of 18

    Thread: Not sure if this belongs but i need help!

    1. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-18-2012 07:58 PM #1
      So basically been trying to install fog lights for the past weeks and I have midline module, so I'm running a relay in my 2008 Volkswagen rabbit.
      I turned the euros witch to fog lights and measured the voltage. I tested the the voltage between the ground and fuse(red n brown) and got 12 volts and the trigger wire and ground and get 12 volts(blue n brown) there is no voltage from any of the yellow wires that go to the actuall fogs.

      Then I plugged into the relay, and did the same measurements,

      The voltage from fuse to ground is 12 volts(red to brown) and the voltage from trigger to ground is now 3-4 volts(blue to brown). And there is still now power to any yellow wires or lights. Need help badly!
      United Grey 2008 Rabbit

    2. Member Pat @ Pitt Soundworks's Avatar
      Join Date
      Nov 14th, 2008
      Location
      Stuart Fl
      Posts
      4,260
      09-18-2012 11:21 PM #2
      If you have power on the plug, but are not getting anything out of the relay, either you have the wires to the relay wrong, or the relay is bad.

    3. Member GTACanuck's Avatar
      Join Date
      Feb 20th, 2009
      Posts
      749
      Vehicles
      08' Rabbit 2.5T (RIP), 12' Golf R
      09-19-2012 09:49 AM #3
      Blue wire is trigger. Make sure you have that running from your euroswitch - Test voltage 12v
      Brown is ground
      Red wire should be hooked up with an inline fuse to the battery or another 12v constant (maybe in bay fuse rail as a possibility) - Test voltage between the brown and the red - 12v

      Yellow wires should run directly to your fogs
      create close grounds for each fog

      Test again, these instructions should have you all set and if it still is not working you probably have a bad relay. Hope this helps

    4. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-19-2012 12:22 PM #4
      Quote Originally Posted by GTACanuck View Post
      Blue wire is trigger. Make sure you have that running from your euroswitch - Test voltage 12v
      Brown is ground
      Red wire should be hooked up with an inline fuse to the battery or another 12v constant (maybe in bay fuse rail as a possibility) - Test voltage between the brown and the red - 12v

      Yellow wires should run directly to your fogs
      create close grounds for each fog

      Test again, these instructions should have you all set and if it still is not working you probably have a bad relay. Hope this helps
      is the voltage supposed to drop when you plug into relay? Because i measured the trigger wire to ground and got 12 volts but when i plugged it into the relay, it dropped to 4 volts
      United Grey 2008 Rabbit

    5. Member
      Join Date
      Sep 9th, 2012
      Location
      Atlanta
      Posts
      285
      Vehicles
      MKV Jetta, B6 Passat
      09-19-2012 02:07 PM #5
      You should have no voltage drop across the relay (less than 1mv). You should have 12V at the trigger when switched on, 12v at the source at all times (if wired to battery, if wired to accy or ign it will read 12v only when the car is on.), Ground on the Brown ground wire, and 12V on the output wire when triggered. There is a NC and NO wire present. You want to use the NO wire. This should be pin 87. Pin 87a is the NC, and will just mirror the input wire from the 12v source until the relay is triggered, and then it will show OPEN. If you have 12v at the source wire with no load, but a large drop in voltage after it is triggered, then you have a bad ground. Check that your ground connection is good and clean, and also into a good piece of the chassis. If this is good, and the wire is not broken, check resistance from the connecter side of the relay to the battery ground. If this is all good, you may have a bad relay. Local car audio shop will have them for about $10.


      EDIT: Also make sure your connetion to the trigger is good. It only takes about 150mA to tirgger the relay, but if your connection at the head light circuit is bad, that may not be happening. Still more than likely a ground issue though.

    6. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-19-2012 02:50 PM #6
      Quote Originally Posted by f5racing View Post
      You should have no voltage drop across the relay (less than 1mv). You should have 12V at the trigger when switched on, 12v at the source at all times (if wired to battery, if wired to accy or ign it will read 12v only when the car is on.), Ground on the Brown ground wire, and 12V on the output wire when triggered. There is a NC and NO wire present. You want to use the NO wire. This should be pin 87. Pin 87a is the NC, and will just mirror the input wire from the 12v source until the relay is triggered, and then it will show OPEN. If you have 12v at the source wire with no load, but a large drop in voltage after it is triggered, then you have a bad ground. Check that your ground connection is good and clean, and also into a good piece of the chassis. If this is good, and the wire is not broken, check resistance from the connecter side of the relay to the battery ground. If this is all good, you may have a bad relay. Local car audio shop will have them for about $10.


      EDIT: Also make sure your connetion to the trigger is good. It only takes about 150mA to tirgger the relay, but if your connection at the head light circuit is bad, that may not be happening. Still more than likely a ground issue though.
      the source(red wire terminal 30) is always at 12 volts. The only voltage that drops is the trigger wire and ground. If you can tell in the first picture, the relay is not connected but I measured the voltage across the trigger wire and ground and it read 12 volts. But when i plugged into the relay, as in the second picture, and measured the voltage between the trigger and ground, it only read 4 volts. I did this with two different relays of same brand and same readings came out.

      And this is SPST, so there are two 87 terminals no 87a. still not working. i really dont want to take this to a shop when they'll charge a but load for probably a simple error.
      United Grey 2008 Rabbit

    7. Member
      Join Date
      Sep 9th, 2012
      Location
      Atlanta
      Posts
      285
      Vehicles
      MKV Jetta, B6 Passat
      09-19-2012 03:03 PM #7
      What are you using for a trigger wire? A simple switch or the fog equip'd headlight switch?

    8. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-19-2012 03:30 PM #8
      Quote Originally Posted by f5racing View Post
      What are you using for a trigger wire? A simple switch or the fog equip'd headlight switch?
      euroswitch, the trigger wire goes into pin "5". Im pretty sure the trigger wire works because, when the switch is off, no voltage, when on 12 volts

      exceot when plugged into relay, then its 0 volts when switch is off and 4 volts when switch is on
      United Grey 2008 Rabbit

    9. Member
      Join Date
      Sep 9th, 2012
      Location
      Atlanta
      Posts
      285
      Vehicles
      MKV Jetta, B6 Passat
      09-19-2012 07:20 PM #9
      Quote Originally Posted by prenne5050 View Post
      euroswitch, the trigger wire goes into pin "5". Im pretty sure the trigger wire works because, when the switch is off, no voltage, when on 12 volts

      exceot when plugged into relay, then its 0 volts when switch is off and 4 volts when switch is on
      Okay, just wanted to make sure that the switch was being used. If you have 0v off, and only 4v on, you probably have a ground issue. What did you use for the ground on the relay?

    10. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-20-2012 03:49 AM #10
      I'm using the same ground that other wires are grounded too. I'll take pictures tomorrow of the ground.
      United Grey 2008 Rabbit

    11. Member
      Join Date
      Sep 9th, 2012
      Location
      Atlanta
      Posts
      285
      Vehicles
      MKV Jetta, B6 Passat
      09-20-2012 09:52 AM #11
      Quote Originally Posted by prenne5050 View Post
      I'm using the same ground that other wires are grounded too. I'll take pictures tomorrow of the ground.
      If there are other grounds using the same spot, it should be fine, but I would try to use a new ground just to be sure. Just reading over the basic instructions for the ECS fog retrofit, and by your description everything is installed fine per their setup. Without seeing the car in person, it is hard to tell, but I would check all your connections again today, as well as all the wiring to make sure (especially now after taking a break from it, really helps). Before taking it to a shop, I would run all new wiring, and use female spade connectors at the relay, just to try and rule out anything weird. I would also try it with a SPDT relay, just leave 87a blank. *just because SPDT are easier to come by, and it will help to eliminate one more thing.*


      EDIT: Does anybody know what the rated current output is on the Euro Switch trigger output? Just in case it is something around 150mA and the relay(s) are just super inefficient.
      Last edited by f5racing; 09-20-2012 at 09:55 AM.

    12. Member
      Join Date
      Nov 14th, 2000
      Location
      Garland, TX
      Posts
      1,714
      Vehicles
      07 rabbit
      09-20-2012 01:08 PM #12
      assuming you haven't crossed any wires on your fog lights and they have proper grounding themselves, I would do a quick test to bypass the switch to make sure everything else still works.

      With the lights hooked up and your constant voltage supplied to the relay, make a long trigger wire and touch it on the battery. If the lights come on, then you know there is something in the switch causing the issue. If the lights don't come on or are really dim, you still have a grounding issue.

    13. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-20-2012 06:05 PM #13
      Quote Originally Posted by Geo View Post
      assuming you haven't crossed any wires on your fog lights and they have proper grounding themselves, I would do a quick test to bypass the switch to make sure everything else still works.

      With the lights hooked up and your constant voltage supplied to the relay, make a long trigger wire and touch it on the battery. If the lights come on, then you know there is something in the switch causing the issue. If the lights don't come on or are really dim, you still have a grounding issue.
      yeah im gonna do this test sometime this weekend and also try all new wiring and start over. Hopefully something will change
      United Grey 2008 Rabbit

    14. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-21-2012 07:48 PM #14
      Quote Originally Posted by Geo View Post
      assuming you haven't crossed any wires on your fog lights and they have proper grounding themselves, I would do a quick test to bypass the switch to make sure everything else still works.

      With the lights hooked up and your constant voltage supplied to the relay, make a long trigger wire and touch it on the battery. If the lights come on, then you know there is something in the switch causing the issue. If the lights don't come on or are really dim, you still have a grounding issue.
      ok so i did the trigger wire test and ran it straight through to battery and the fogs do come on. So is the problem the euroswitch or something to do with it?
      United Grey 2008 Rabbit

    15. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-21-2012 07:50 PM #15
      i also had these faults on vagcom

      Address 09: Cent. Elect. Labels: 3C0-937-049-30-M.lbl
      Part No SW: 3C0 937 049 AH HW: 3C0 937 049 AH
      Component: Bordnetz-SG H54 2202
      Revision: 00H54000 Serial number: 00000008242806
      Coding: 008D0F214004150047140000001400000008730B5C00010000 0000000000
      Shop #: WSC 00000 785 00200
      VCID: 6FC3054A7EA6B260C8F

      Subsystem 1 - Part No: 1K1 955 119 E Labels: 1KX-955-119.CLB
      Component: Wischer 170408 021 0501
      Coding: 00038805
      Shop #: WSC 00000

      2 Faults Found:
      01800 - Light Switch (E1)
      008 - Implausible Signal - Intermittent
      Freeze Frame:
      Fault Status: 00101000
      Fault Priority: 3
      Fault Frequency: 5
      Reset counter: 49
      Mileage: 115893 km
      Time Indication: 0
      Date: 2005.09.13
      Time: 31:63:63

      Freeze Frame:
      OFF
      Voltage: 12.60 V
      OFF
      ON
      OFF
      OFF
      OFF

      02195 - Dimmer Switch Instrument Panel & Switch Lighting (E20)
      009 - Open or Short to Ground - Intermittent
      Freeze Frame:
      Fault Status: 00101001
      Fault Priority: 5
      Fault Frequency: 1
      Reset counter: 49
      Mileage: 115893 km
      Time Indication: 0
      Date: 2005.09.13
      Time: 31:63:63

      Freeze Frame:
      OFF
      Voltage: 12.50 V
      OFF
      ON
      OFF
      OFF
      OFF
      United Grey 2008 Rabbit

    16. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-21-2012 11:09 PM #16
      i also found this, http://bellsouthpwp2.net/a/p/apollo7...Fog_Lights.pdf

      i hope its not necessary
      United Grey 2008 Rabbit

    17. Member
      Join Date
      Jun 22nd, 2008
      Location
      VA
      Posts
      1,072
      Vehicles
      VW 08 Rabbit
      09-29-2012 08:24 PM #17
      in case anyone was wondering, the above link did solve the problem and if anyone has problems and needs help, let me know
      United Grey 2008 Rabbit

    18. 09-30-2012 01:03 AM #18
      Thanks for this as I've been planning to do it over the Thanksgiving weekend.

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •