Rewiring my EFI Magnum - 1970 Dart Swinger
When I bench tested the cluster with the lights off in the garage I found some of the lighting was too bright. For starters, on the tach between the 2000 and 4000 rpm area the light was super bright. Probably just the angle of the LED strip or just too many lumens. When I looked at the back of the cluster I saw there are sections where the factory had the outer perimeter on the back of the lens blacked out. The areas where the tach was getting washed out didn't have that blacked out, so I put a bit of flat black paint on there (it's still wet in this picture):
There was also a section between the ammeter (now voltmeter) and the fuel gauge where one of the LEDs in the strip lights was shining right through and causing a lens flare effect. For that issue I found the LED that was causing the lens flare and I marked it up with a black sharpie. That worked out perfectly, here is the result. The tach is a little brighter than everything else, but it's not as bright as it looks in the pic. And you can just see a bit of the flare above the E in the fuel gauge, but it's not glaring like it was before.