Turn signal indicator light, Only blinks once ... |
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Turn signal indicator light, Only blinks once ... |
Chaznaster |
Nov 14 2021, 05:45 PM
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#1
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Member Group: Members Posts: 297 Joined: 22-November 15 From: Concord, MA Member No.: 19,389 Region Association: North East States |
Hi. I have been trying to troubleshoot the turn signal indicator light - the one on the speedo. It's a '74 so only one light that is supposed to blink regardless of the chosen direction. It is not worked since I have the car. The signals themselves and the hazards work fine.
Recently, I went through and replaced the dashboard bulbs and got nearly everything working. Not the turn signal, however. Interestingly, when I disconnect and connect the battery, then switch either the lever on the steering column or the hazards, the light comes on once (yay!) but then refuses to come on again (awww). My first thought is the hazard relay (the square one on the back of the fuse panel) might be bad. Before trying to replace it (I have read that the new ones are problematic), does anyone have any other suggestions? If not, what is the most reliable source for that relay these days?? Thank you. |
Spoke |
Nov 15 2021, 11:30 AM
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#2
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Jerry Group: Members Posts: 6,978 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
the light comes on once (yay!) but then refuses to come on again (awww). This is a common issue with the old OEM flashers. The secondary coil which powers the tach indicator loses efficiency over time and may flash once or twice then stop. There is an LED-compatible flasher available EP26 that is pin-compatible with the 914 flasher. It can drive standard bulbs or LEDs. The C2 pin on the EP26 out of the box isn't connected to anything. I modify them to put out 12V on C2 when flashing. The flashing of the tach indicator is not affected by the type of bulb used in the tach. LED or bulb can be used. |
Chaznaster |
Nov 15 2021, 03:04 PM
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#3
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Member Group: Members Posts: 297 Joined: 22-November 15 From: Concord, MA Member No.: 19,389 Region Association: North East States |
the light comes on once (yay!) but then refuses to come on again (awww). This is a common issue with the old OEM flashers. The secondary coil which powers the tach indicator loses efficiency over time and may flash once or twice then stop. There is an LED-compatible flasher available EP26 that is pin-compatible with the 914 flasher. It can drive standard bulbs or LEDs. The C2 pin on the EP26 out of the box isn't connected to anything. I modify them to put out 12V on C2 when flashing. The flashing of the tach indicator is not affected by the type of bulb used in the tach. LED or bulb can be used. I was looking at the wiring diagrams and wonder whether the parking brake light works with the modified EP26 setup. Does it bypass the flasher circuit as in the OEM unit? And/or does it cause the turn signal indicator to light up as well? I am guessing there is only one coil in the EP26?! |
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