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Gr8WhtHype

Solex
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Posts posted by Gr8WhtHype

  1. On 9/13/2018 at 10:51 PM, Simeon said:

    Get a test light and start checking the wiring. 

     

    Check for power at the relay via the battery feed and inline fuse using an independent independent ground for the test lamp (battery negative). If you have power then tick that off the list. 

     

    Connect the test light to the battery positive positive and the check the ground wiring at the relay. Lamp lit shows that the ground is OK, no lamp then check the quality of the ground at the relay screw. 

     

    Flick your switch and see if you get a click out of the relay. If it is clicking then move on to checking for voltage at the fog lights and then checking their ground out. If it doesn’t click then you need to check the switch circuit. It sounds like this has a supply from the fusebox that goes via the switch to the relay. Just check for voltage at all accessible points working from the fusebox connection, to the switch and from the switch to the relay and then the relay to ground. 

     

    If that all checks out but the relay still isn’t working then try swapping the relay out or false feeding it directly from the battery to see if it works. I have found that my original round can horn relay can ‘freeze’ if not used for a while.  A smart tap with a screwdriver handle will get it working again followed by a few good horn blasts. Perhaps your relay is similarly effected?

     

    I had power at the relay, but problems with the ground. I cleaned all points of contact on the relay with a wire brush and emery cloth which remedied that problem. They relay clicks when I toggle the fog lights, with the headlight switch disengaged or with the parking lights running. But once the head lights are engaged, I no longer hear the relay (not sure how relevant that is).

     

    I have voltage at all fuses, including #9. I did not pull the dash to check the switch. How likely of a culprit is that given that it actuates the fog light relay?

     

    I noticed that John76 recommended wiring the relay differently, which I may try. I saw another wiring guide was posted, which I have not read yet. I'd really like to understand this problem if possible before moving onto a different solution.

  2. This is/was a really informative write up on wiring fog lights properly. Funky’s relay diagram was especially helpful. Thank you. But I’ve still got a problem with the fog light setup in my ‘76 and I’m hoping some more of that knowledge can be shared.

     

    My car was a barn find. I’m the second owner. I know nothing about the history other than what can be observed. I noticed upon removing the grille that Bosch square fog lights have been installed. Not sure if this was done by the dealership or in the aftermarket, but they are not working. So, I do the following:

    1. Read forum
    2. Visual inspection - find nothing obviously wrong
    3. Replace bulb - no change
    4. Repace all fuses in fuse box - no change, but needed to be done anyway
    5. Inspect wiring and relay connection points - no change
    6. Read forum...

    My fogs are wired to a relay. The relay is wired directly to the battery. That wire has an in-line fuse. The ground runs from the relay to the bolt securing the relay on the fender wall. The last wire runs from the relay to the switch in the dash. My dash however, has a toggle switch, not the push-pull defroster style commonly recommended. It also seems to have another wire running from the switch to the fuse box.

     

    What am I missing? Bad relay? Bad in-line fuse? Dummy switch masquerading as the real thing? Wiring completely wrong? Comments and ideas appreciated.

  3. Hey Scoop, welcome to Tampa. Nice 02! I've got a '76 (my first) I rescued out of a barn in West Virginia that hasn't seen the road in nearly 30 years. I'm working on it a little here and there, but I'm a noob. It'll be roadworthy some day. Until then, it's just a dream. I'll keep my eyes out for ya!

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