I used blue LED lights for both the Speedo and Tach, they worked great.
Nice bright deep blue, but when I used the LED for the turn signal indicator, it didn't work when the right lights were flashing.
I tried several other LEDs and the same thing happened, so I rewired the signals, and it didn't help.
I put the incandescent bulb back in, and it worked fine.turned on with the left and right signals, LED only worked with the left signal.
Anyone else have that problem?