TSRM/MK2 Supra/Repair Manual
Repair ManualWiring Diagrams
p.049
BE/Body Electrical System50 / 121
p.051
BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges — MK2 Supra Body Electrical System, page 50
100%
BE-50 BODY ELECTRICAL SYSTEM — Instruments and Sender Gauges SECTION | TROUBLE J | Tachometer | Lights do not dim when light and rheostat S/W turned ON. Only tachometer? | No → Refer to section C ↓ Yes Remove meter and connect sub-harness (SST) ↓ ① With the ignition S/W at ON position, light S/W turned ON and rheostat turned to MAX, is there 3 to 5V between terminals 4 and 6 of tachometer connector? | No → Replace speedometer ↓ Yes Replace tachometer NOTE: Connector dimming is performed by the dim signal (Dim②) of the speedometer. 1 Tachometer 6 4 Dim ② GND ON MAX (Fade) MIN (Bright) OFF