So the switch on my 75 from by the door to the galley light was a 3 way switch I have installed a LED light bar under there at the moment it is only switched from the door mine had the 2 red wires coming from the switch by the door to the galley and the ground at the galley end. you will need to connect the switch at the door to make sure power is running to the light. OR remove the switch at the door but you will need to either find a new source of 12v
power to work the lights in the galley cabinet or splice through 12v
power from where the door switch is.
A DC multimeter is a must for troubleshooting issues like this as you can be chasing power and have a bad ground or any multitude of other issues.