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I installed LED lights in my 99 coupe after putting in a Hyperflash Harness. I installed switchback front corner LEDs and the other small LEDs inside and out. Everything works great.
Next, I just did the same thing with my 2003 convertible. It doesn't work like my coupe. The right turn signals work, but when I use the left turn signals, the switchback front corner LED turns amber, but does not flash. The back LED taillights don't flash and the 3rd brake light comes on. I replaced lights to make sure I did not have a bad LED, but it did not change the situation.
Anyone have any ideas on what to check? Thanks in advance. I have tried to check everything, but nothing has worked yet.