I had a similar event happen last year when I only got "2 green" on
lowering the LG. The plastic housing on one gear down switch had
become brittle with age and broken the wire. That landing made me
sweat enough to just replace all 3 wiring assemblies when I got it on
the ground. The question gets harder to answer as the cost goes up
(jugs), and as Jay says you can't win. "It all depends..." My
general rule on a 1969 aircraft is "replace 'em all" when one goes
bad.