Ok so I just bought a 91 w250 on Friday and it runs fine, but I've noticed that the water in fuel light and wait to start lights flash when I hit bumps and every once in a while the wait to start light stays on momentarily and the head lights and dash lights dimm till the wait to start lights goes off. My wife and I both think I have some loose wires and or some bare wires, what do you guys think it is?

 

You need to look here.

https://www.dieseltruckresource.com/...t-t102027.html

You should find everything you need there.


Congratulations on the new ride.


T.