led bulbs

I swapped some LED bulbs into my reverse lights back when I was doing my engine(5.9L)/trans(NV3550) swap and now that everything is up and running the lights aren't working. I put a new reverse light switch into my transmission and checked the fuse in the glove box assigned to the reverse lights...

Looking for suggestions on easy plug/play bulbs. Don’t want to mess with any extra wiring, mainly just want more light output than stock. Kind of indifferent on color temperature. Is LED my best option? Or something else? Thanks!!

I originally purchased the recommended NEO4-RHP. They are 1 mm small for the slider application. Let it go like that for some time until someone ask on the forum. Quickly get distracted from my main task to get this knock out and help a fella on need. 1) Removed the Slider assemble from Dash...