I ordered 4 superbright amber LED's and the flasher unit FL-3 for my turn signals. I tested first with just the flasher unit installed and kept the incandescent bulbs in place. It worked perfectly.
I replaced the 2 front turn lights with LED's, everything worked correctly. Each side flashed and interior indicators worked correctly.
Then I added the 2 rear LED's. All four exterior turn signals flashed at the same time and the indicator lights on the dash did not blink. I removed the rear LED's (no bulbs) and front's worked okay.
I now have FL-3 flasher unit with LED's in front and incandescent bulbs in the rear. That works as it is supposed to work.
Has anyone else seen this problem or do I need to start tracing out the wiring. I have not added load resistors as I thought I did not need them with the FL-3 flasher. I am wondering how I am getting enough voltage to the opposite side lamps of the car when I have all 4 LED's and it only works correctly with a mixture of the two types. I have not tried all possible combinations. I will give that a go next.
I realize there is a lot less current with the LED"s but thought the flasher unit would handle that. The wiring diagram for these cars is about as bad as it gets. I had major restoration done about 12 years ago and electricals have worked okay to date so I am not sure there is a wiring error. Although that is always possible. It is the original wiring harness. Modifications to negative ground and alternator added at restoration.
I replaced the 2 front turn lights with LED's, everything worked correctly. Each side flashed and interior indicators worked correctly.
Then I added the 2 rear LED's. All four exterior turn signals flashed at the same time and the indicator lights on the dash did not blink. I removed the rear LED's (no bulbs) and front's worked okay.
I now have FL-3 flasher unit with LED's in front and incandescent bulbs in the rear. That works as it is supposed to work.
Has anyone else seen this problem or do I need to start tracing out the wiring. I have not added load resistors as I thought I did not need them with the FL-3 flasher. I am wondering how I am getting enough voltage to the opposite side lamps of the car when I have all 4 LED's and it only works correctly with a mixture of the two types. I have not tried all possible combinations. I will give that a go next.
I realize there is a lot less current with the LED"s but thought the flasher unit would handle that. The wiring diagram for these cars is about as bad as it gets. I had major restoration done about 12 years ago and electricals have worked okay to date so I am not sure there is a wiring error. Although that is always possible. It is the original wiring harness. Modifications to negative ground and alternator added at restoration.