Having a few very very odd issues after LED conversion

[Astroman]

I changed it most of my bulbs to LED and now each month since new gremlins pop up each month.

Bulbs changed:
Front marker lighs, amber LED
Side blinker lights located on the fenders, amber LED
Small 194 lights located in the headlights, white LED
TYC taillights, changed running lights and running/brake lights with red LED
Dome light and map lights white LED
License plate light, white LED light strip with 3 LEDS (done back in 2012)

First issue I noticed was with the headlights off my dash lights would dim super dark when i used the brakes unless i put the dimmer switch to max brightness. Operation of the dash lights are normal when the headlights are on.

The second problem started last month and happens 90%. My front left amber LED running light will turn off and on in 1 second intervals with the headlights on, the right one does not to this and only happens when the headlights are in the on position.

The third issue that just started is if I hit the brake pedal with the car off and lights off the open door chime goes off.

I know blinkers can have an issue with LED bulbs due to they don't have enough resistance, but am puzzled about about the 3 issues and fear more may pop up leading to a potential problem.

Any helpful insight is appreciated!