Originally Posted by Carpenterman

I have this same problem. I've checked and double-checked the wiring and swapped in a known-good relay from my parts car--all to no avail.

I think the problem is the ignition switch. I can push up on the key and get the light to go off, so I believe there is a contact problem inside the switch.

Try manipulating the key when the light flickers and see if that affects it.