idiot light

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idiot light

n. Slang
A light on the instrument panel of a motor vehicle that gives forewarning, as of an overheated engine.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.idiot light - a colored warning light on an instrument panel (as for low oil pressure)
control board, control panel, instrument panel, board, panel - electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices; "he checked the instrument panel"; "suddenly the board lit up like a Christmas tree"
red light, warning light - a cautionary sign of danger
References in periodicals archive ?
That's a little sensor that plugs into the side of the engine, reads the pressure and sends that information to the gauge and the idiot lights on the dashboard.
Right on his heels, the second idiot lights a firecracker and throws it on the floor.
On a late model setup the tachometer might have a couple internal idiot lights to provide some sort of engine warning if things go awry.