tenshi_R wrote:
do I even need that?
seems like the sensor wire doesn't have aluminum shielding just heat shield
This is because when this sensor is used in a factory loom is rarely routed near high energy lines (ignition), AC lines (some sensors, alternator), or lines supplying large current (battery cables, fuse box feeds, ECT). The longer the harness the more important the shielding will become as the amount of electrical interference will compound with length. You can build your harness, then wrap it in foil or steal braided loom and ground that covering. If you use foil, rap it in tape or heat shrink to give it some protection from wear.