My basic CatEye wired computer works fine. It's on a black bike and the black wire runs alongside the black Dynohub™️ wires.

My LED front lamp interacts (messes) with my wireless computer. Yeah, yeah, there's light placement and shielding and whatever. I gave up on regular wireless.

My Bluetooth wireless is fine.

My Xoss G GPS unit - no, wait...it doesn't do mapping, it just uses GPS signals to measure distance and speed. Anyway, I like it because I can use it interchangeably on my bikes with 16", 17", 26", 27.5", 700C and 27" wheels. No setup/calibration, no wires.

My Huret Multito never needs charging or a new battery. I replace the drive belt every five years or so. Applying my empirically derived correction factor to the displayed reading, it's dead accurate.