Functionally identical to a wiring harness, this term is more commonly used in British and Commonwealth automotive contexts. It describes the complete assembly of wires, terminals, and protective sheathing that links the vehicle's electrical components. The loom keeps the complex electrical system organized and prevents loose wires from snagging on moving mechanical parts.
Heard on the job
We need to drop the dashboard to get access to the interior wiring loom.
Also heard as
- Wiring harness
Do not mix it up with
- Wiring harness: These terms are perfectly synonymous, with 'loom' favored in British English and 'harness' in American English.
Related terms
Wiring harness
An organized bundle of insulated electrical cables and connectors that routes power and data throughout a vehicle.
ECU
The primary computer that manages engine performance, fuel delivery and emissions.
CAN
A controller area network bus that allows vehicle microcontrollers and devices to communicate.