So i have 2 switches that are wired into my fusebox, with a fuse in between the switches and the fusebox. When i drive down a bumpy road and my car rattles at all, the power to the switchs flickers on and off. They both flicker at the exact same time, so i know its not just one of my switches going bad. Could i need a new fuse block, or should i just re-check all my wires?

 

I assume these are lit switches and the flickering is the switches lights flickering?.... I'd check the grounds of the switches and from what it sounds like both are using the same ground (thus the flicker in unison). Beyond that I'd check the connection to the fuse box.

 

well the switches have LED's on the them that flicker, as well as what they are actually powering: one powers neons under my dash and the other neons under my car, and both flicker at the same time.

 

hmmm sounds like a bad connection with the fuse box and/or a bad ground(s).......I'd just start checking for loose connections (start with the fuse box and wiggle the wires that you have connected to it and then go down the chain till the ground) and see what can be done to tighten them down (like squeezing female terminals down a lil more to make a tight fit and so forth).