You can test with 2 batteries in series . (1.5v + 1.5 Volt). 3volts will be enough to test the led's. (I had a universal power adapter) and switched the voltage to 3 volts.
and...test the leds in the buttons before you mount them in the vci.
the glue around the buttons once they are installed are to keep them from moving/or sliding around. You need a little bit. Plus you can cut the glue out if you ever need to.
The buttons are great and the led's shouldn't burn out. You shouldn't have to take the buttons out anyway.
Make all 8 first....and order 10 (just in case you mess one or two up).
BC
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