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Have you checked to see if you have voltage at terminal 30 of the hazard switch? This should be powered at all times and is fused (don't know which on your car, this info comes from a 73.) I am assuming the wiring for the hazards and parking/turn lights are the same over the years--at least to the point where power is supplied. Hope this helps a bit.
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You are doing fine. This is just a slow process. I believe you have a couple of wires switched or your hazard flasher button/switch is fried internally (would mean one set of contacts stuck open and one stuck closed). I would start by checking all the wires to the hazard flasher. Pull out the button/switch and write down each pin number, the color(s) of the wires attached and use your test light to see if you have power with the key on (switched) and with the key off...and with the parking lights on at each pin. Post your results and that should give us an idea what direction to go.
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ok pulled hazard switch here are the results:
pin 30: always hot. pin R: hot with key to ACC and lights on and turn signal to right. pin 15: nothing. pin L: hot with key to ACC and lights on and turn signal to left. pin 31: nothing. pin 58: hot with key off and lights on. pin 49: hot until I turn the key to ACC. pin 49a: hot until I turn key to ACC. I really do apprieciate your help. |
No problem. Take a look at pin 15. You should have power there when the key is on. What color is the wire? Probably green with a red stripe. If so, go to your fuse that is for your backup lights/turn signals. I believe it will be #11 (16amp). There should be some red wires on one side of the fuse (hot when key is on). On the other side, there should be a green/red wire and green/yellow. If your backup lights work, , the fuse is likely good and the green/yellow is probably fine. The green/red goes to pin 15. Make sure that wire is in place and has a good connection.
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yes, pin 15 on the flasher is hot when the key is in the on position. for 1988-1989, green/red goes to the hazard switch, another green/red going to backup lights, and a red/blk going to oil temp gauge. hope that makes sense.
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If you have not already, check your front turn signal bulbs and see if they are correct/dual filament.
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yes, fronts are dual filament.
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I have been experiencing a similar problem with the hazards / turn signals on my 78. Hazards work but the tach indicators won't flash [red hazard lamp flashes]. Turn signals work but very slowly, perhaps half speed and the tach indicators also work. I've spent sometime pouring over the schematics and have found that the circuit has changed alot over the years. In my case the flasher relay appears to switch 12 volts between 49a and C. When one terminal is high [12 volts] the other is low, [zero volts]. I think my problem is the relay itself and it appears that the generic replacement relay that I purchased does not work in my vintage circuit.
My question: Is it possible to test the relay on the bench without a load? Back to KRD's problem. There are a couple of grounds that need to be checked out. One is for the hazard switch and the other is for the flasher relay. On my car the hazard switch ground is in the trunk behind the the fuel gauge [G5, I think]. The flasher relay ground oddly enough is under the dash behind the vent levers...G2, I think. |
checked relay ground, hazard switch ground, and all of the bulb grounds they are all good. at my wits end.
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Turn off your key and your lights. Do not turn on you hazard switch or turn signals. See if you have voltage at any pins on the back of the hazard putton. You should have power at pin 30. If no power at pins other than 30, use your ohm meter to see if you have a short between pin 58 and the rest of the pins except 30 (don't use ohms function on powered pin
(30). |
I have a copy of a schematic for 86-87. It looks like what you have been explaining to us. Fuse 8 [ 16 amps] on the fuse panel should be providing voltage to pin 15 on the hazard switch via a green/red wire when the ignition is in the run position. That voltage leaves the hazard switch on pin 49 and goes to 49 on the flasher relay. It appears that the 49 to 49 connection [red/white wire I think] is ok because it provides power when the ignition is off and you activate the hazard switch. Sounds like the fuse, the wire connection on the fuse block or some funky crud on the fuse ends or spring clips. Clean those connections well.
As for myself I have had some odd issues with the multi-pin connectors under the dash. I now have my turn signals and indicators working as they should. I also have the hazards working when the car is turned off and also when the car is running. The only odd problem that remains is the indicators on the tach do not flash with the hazards. My solution was removing and cleaning each of the multi pin connectors. |
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Found an 88/89 schematic. The drawing might help. The upper left hand corner shows the fuse, the hazard switch and the flasher.
http://forums.pelicanparts.com/uploa...1239678061.jpg |
bottom half showing the headlights/turn signals as fintstone mentioned
http://forums.pelicanparts.com/uploa...1239678611.jpg |
Wow! That is the best drawing I have ever seen of the circuit. Beats my handrawn one cold. Might be a good idea to just check wire colors with pins on the hazard switch and turn signal stalk...also at fron and rear turn signal light assemblies.
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I checked the socket for the hazard switch (I didn't know if I should have checked it with the hazard plug, pluged in). using a ohm meter I got a connection between 58 and R, 58 and L, 58 and 31, 58 and 15. I couldn't check 49, and 49a as they were also hot with the key off, as was 31.
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I vote for a bad headlight switch or possibly a bad connection on the back of the switch where the harness plugs into the switch.
Mark |
any possibility its a bad hazard switch?
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anyone have a diagram or some kind of photo, so I can check the connections on the back of my headlight switch?
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Is your hazard switch/button soldered in or a plug in? |
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