misconnect
verb
misconnected;
misconnecting
Definition of misconnect
: to connect (something) in a wrong or improper way
Spark plug wires should be replaced one at a time between the distributor cap or ignition coils and the spark plugs to avoid misconnecting the wires. If you misconnect the wires, the engine will not run.— Ronald G. Haefner two people who sometimes misconnect
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