Greetings,
Mr. CR. Prior to the sale of our Cheoy Lee I replaced all the fluorescent lighting with LEDs.
VERY simple! All of the lights had a removable plastic diffuser over the bulb(s). The fixture resembled this and was either surface or flush mounted.
I removed the diffuser, removed the fixture, ripped out all the ballasts, light tubes and sockets and simply bought peel and stick LED strip lighting and stuck it on what is labeled the "cover" in the diagram. Wired the LED directly to existing wiring, re-installed the fixture and popped the diffuser back on. About 20 minutes per light.
I bought the LED strip and the end terminal fittings locally in Fort Lauderdale at Apollo Lighting.
https://www.apollolighting.com/
I know you can buy this stuff on line but I'm a touchy/feely type guy and I want to actually LOOK at products I buy.
I also used insulated spade connectors to each fitting to make for easy removal if I ever had to. Easy polarization as well. + to female, - to male. With the spade connections I could do all my modifications "on the bench" then simply plug the suckers in!