Must juhe, facelift mudelitel, tahhomeetrist jookseb c101 pistikule (peamine elektrisüsteemi pistik) ja sealt ajusse.
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Prefacelift mudelitel see juhe jookseb läbi teist pistiku, 3 pin-i pistik, pedaalite juures. Kui sul on preface auto, aga mootor vahetatud facelift-i vastu siis tuleb veeta kaks juhet C101 pistikusse.
Tachometer
The large right-hand gauge is the Tachometer. On lower-specification cars, this was replaced with a clock.
The tachometer is fed by a signal from the ECU. This black wire goes through the C101 plug to the instrument cluster, and goes to pin 7 of the blue plug (C1). However, on older vehicles (earlier than 1987) the simpler engine management system provided tachometer and fuel rate data through a separate plug, not the main loom.
The tachometer is arguably the most problematic instrument in the dash cluster, and the source of 90% of dash problems. Most of these issues can be traced to the SI batteries. If your pre-facelift car has Tachometer issues, try to locate the small three pin plug and socket above the pedal area, and ensure that it is connected properly.
If you have swapped your pre-facelift engine to a facelift, and find that your tachometer no longer works, this plug is the issue. Your new engine loom feeds the signals that went through this connector via the 20 pin C101 engine loom plug, so you have the choice of either extending two wires from the hanging plug to the engine loom socket next to the fusebox (as they are in later body looms), or teasing the two wires out of the engine loom, near the ECU plug, cutting them (abandoning the rest of the wire to the C101 plug) and splicing the plug from your old engine loom onto the wires.
eks ma uurin seda juhet ka siis, eriti palju variante pole enam jäänud.