Quote: Ok I'm going to ask the most ridiculous questions on here, what is "noise" - "shielding" ? There's more but I'll start here.
Noise can be any unwanted electrical signals. Solid grounds help reduce noise. One source of high frequency noise in your engine compartment are the spark plug wires, especially if they are solid core or non-suppression type.
Shielding is a cover or other device to absorb / redirect noise away from your signal. One way to shield signal wires is to use a braided wire covering, AKA shield wire, that is grounded on one end and acts as a antenna to gather these signals and take them to ground.
Michael
1968 Barracuda Notchback Coupe
440 EFI 6-pack, T56 Magnum 6-spd
