What should be removed to avoid incorrect resistance readings caused by parallel circuit paths?

To avoid incorrect resistance readings caused by parallel circuit paths, it is essential to remove one or two wires to the item being tested. This action effectively isolates the item from the parallel paths that can influence the resistance measurement. When multiple conductive paths exist, they can lead to misleading readings because the resistance measured will not solely depend on the component being tested; instead, it may also include the resistances of other paths in the circuit.

By removing one or two wires, you create a situation where the resistance measurement reflects only the item of interest, free from the effects of parallel connections. This is a standard practice in electrical testing to ensure accurate diagnostics and repairs. It allows for a precise reading of the component's resistance, enabling the technician to assess its condition accurately.

Removing all wires or the entire circuit is often unnecessary and could complicate the testing process, while only removing ground connections would not sufficiently address potential parallel paths affecting the measurement.