hot-wire

[v. hot-wahyuh r; adj. hot-wahyuh r] /v. ˈhɒtˈwaɪər; adj. ˈhɒtˌwaɪər/
verb (used with object), hot-wired, hot-wiring.
1.
Slang. to start the engine of (a motor vehicle) by short-circuiting the ignition.
adjective
2.
Electricity, Engineering. depending for its operation on the lengthening or increasing resistance of a wire when it is heated:
hot-wire anemometer; hot-wire microphone.
Origin
1950-55
British Dictionary definitions for hot-wire

hot-wire

verb
1.
(transitive) (slang) to start the engine of (a motor vehicle) by bypassing the ignition switch
Slang definitions & phrases for hot-wire

hot-wire

verb
  1. To start a car, truck, etc, by electrically bypassing the ignition lock: He could hot-wire any car in about 20 seconds (1961+)
  2. To activate illegally; tamper with: let the affected corporations hot-wire the regulatory process (1970s+)

[fr the notion of attaching an electrically hot wire to the starter-motor relay]