useful device — logbook Toyota Raum, 1998

I wanted to put a tachometer for myself for a long time, I searched and chose everything. And then I caught the eye of the on-board computer. In addition to the tachometer, it also has: a clock, a calendar, a voltmeter, a load plug, an average fuel consumption, and also various functions on the little things. was not there, except for the help of an electrician in finding two wires.