 Hazards not working |
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| uncle smokey |
 Nov 6 2011, 08:50 PM
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#1
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Newbie  Group: Members Posts: 19 Joined: 4-June 11 From: PA Member No.: 13,157 Region Association: None  |
I was working on some electrical issues on my dad's 73. I replaced the turn signal switch and the wiring as well as there were some old issues. New flasher too. All the turn signals work now but when I pull the hazard switch nothing happens. I tested the the terminal 15, iirc, and it is powered with the key on and works when the blinkers work, but goes out as soon as the hazard switch is pulled. This is happening on both of the switches I have. I guess its possible that both are bad, just wondering if anybody has any other opinions. All fuses are good too. Thanks.
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| sean_v8_914 |
Nov 6 2011, 08:52 PM
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#2
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
ground point A next to the relay board in eng comp
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| Spoke |
Nov 6 2011, 09:12 PM
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#3
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Jerry Group: Members Posts: 7,154 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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Here's a simplified diagram of the turn signal circuits. If the turn signals work then the flasher is good as well as the wires to the turn signal stalk.
Must be the wires to the flasher switch. Attached image(s) 
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| sean_v8_914 |
Nov 6 2011, 09:18 PM
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#4
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
dont waste your time trouble shooting untill you clean
ground point A next to the relay board in eng comp |
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| uncle smokey |
Nov 7 2011, 09:34 AM
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#5
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Newbie Group: Members Posts: 19 Joined: 4-June 11 From: PA Member No.: 13,157 Region Association: None |
Thanks guys, I have at least 20 hours already in the electrical system alone, but this is the last issue. I know the rules around here, I will post pics of his car soon as well.
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| Spoke |
Nov 7 2011, 05:22 PM
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#6
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Jerry Group: Members Posts: 7,154 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None
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If you say the turn signals work, then most of the circuit is ok except for wiring around the hazard switch. Chances are the 2 switches you tried were ok but some other issue exists.
On the hazard switch: Pin 15: This is power for the turnsignals when the hazard switch is off. When the hazard switch is ON, power comes in on pin 30. Check the voltage on that pin. It should always be 12V. Do you have power on pin 15? BTW, where in PA are you? |
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| uncle smokey |
Nov 7 2011, 07:17 PM
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#7
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Newbie Group: Members Posts: 19 Joined: 4-June 11 From: PA Member No.: 13,157 Region Association: None |
QUOTE(Spoke @ Nov 7 2011, 06:22 PM)  If you say the turn signals work, then most of the circuit is ok except for wiring around the hazard switch. Chances are the 2 switches you tried were ok but some other issue exists. On the hazard switch: Pin 15: This is power for the turnsignals when the hazard switch is off. When the hazard switch is ON, power comes in on pin 30. Check the voltage on that pin. It should always be 12V. Do you have power on pin 15? BTW, where in PA are you? Ok, I have power to 15 with the hazard off, when I turn the hazard on there is no power on 15. So that seems ok. According to my test light, I always have power to 30. It's gonna be about a week until I can get out to my dad's to work on it again. I am right up the road from you in Stroudsburg. thanks again |
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| uncle smokey |
Nov 28 2011, 08:49 PM
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#8
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Newbie Group: Members Posts: 19 Joined: 4-June 11 From: PA Member No.: 13,157 Region Association: None |
so I finally got some time to go out and work on the car. Guys, thanks for the advice. Sean it did turn out to be the ground in engine compartment. Thanks again. Now that all the electrical gremlins seem to be done, my dad has been able to drive it a little, and by little I mean up and down the driveway. It's a start. Again, thank you guys.
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