 Why is my brake/hazard light still flashing?, Tested everything I can think of so far |
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| Matty900 |
 Oct 7 2017, 08:52 AM
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#1
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Senior Member  Group: Members Posts: 1,284 Joined: 21-February 15 From: Oregon Member No.: 18,454 Region Association: Pacific Northwest  |
My multi gauge in my 72 will not stop flashing (IMG:style_emoticons/default/chair.gif)
First thought was that I needed to reset the master cylinder after the breaks were done. I did that - Still flashing I checked the switch on the emergency brake. I had connected one of the wires for the back pad light to it (IMG:style_emoticons/default/headbang.gif) Fixed that - Still flashing I was blowing a fuse for the drivers side signals. After reading posts I thought this could be indicating I had an issue with lights. I tracked down the ground, fixed the problem - Still flashing I had replaced almost all of the lights in the dash with LEDs. So after reading posts about how the flasher relay works, I swapped these 2 lights and the turn signal lights in the tac back to regular bulbs - Still flashing Any ideas? |
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| Spoke |
Oct 7 2017, 12:09 PM
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#2
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Jerry Group: Members Posts: 7,104 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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Below is the circuit for the turnsignal/brake warning flasher system for your car. On the right side, notice the brake warning bulb. It connects to the brake master cylinder switch and the e-brake switch.
Try disconnecting the wires to one of the switches then the other to see which one is providing the current path to ground for the warning bulb. Attached image(s) 
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| 914_teener |
Oct 7 2017, 04:26 PM
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#3
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914 Guru Group: Members Posts: 5,250 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
QUOTE(Spoke @ Oct 7 2017, 11:09 AM)  Below is the circuit for the turnsignal/brake warning flasher system for your car. On the right side, notice the brake warning bulb. It connects to the brake master cylinder switch and the e-brake switch. Try disconnecting the wires to one of the switches then the other to see which one is providing the current path to ground for the warning bulb. (IMG:style_emoticons/default/agree.gif) Yep. If the wires are reversed on the MC switch it will do what yours are doing. Also check all the ground wires. Good luck, I had this same problem. |
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| arne |
Oct 7 2017, 07:25 PM
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#4
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Serial Rescuer of old vehicles... Group: Members Posts: 770 Joined: 31-January 17 From: Eugene, Oregon Member No.: 20,799 Region Association: None |
My car’s 2 wire master cylinder switch was faulty, I could not make it stop flashing until I converted it to a 1 wire switch.
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