ILLUMINATION LAMPS Circuit Diagram
T-89wiring diagramUnverifiedDiagram shows USA-only variants (METER ILLUMI with cruise control; with headlights washer). Cruise-control branch is USA only.
LIGHTING SYSTEM
ILLUMINATION LAMPS — Circuit Diagram
Illumination Lamps Circuit Diagram
Components (19)
METER ILLUMI [I] connectorMETER ILLUMI [I] connector (with cruise control, USA only)FRONT FOG LIGHTS SWITCH ILLUMI [I] connectorHAZARD & RETRACTOR SWITCH ILLUMI [I] connectorPANEL LIGHTS CONTROL [I] connectorHEATER CONTROL SWITCH ILLUMI [I] connectorASHTRAY ILLUMI [I] connectorCRUISE CONTROL MAIN SWITCH ILLUMI [I] connectorFRONT (F1)–INSTRUMENT PANEL [I] bulkhead connectorFRONT (F1) connector segment (with headlights washer [I])TNS Relay (for USA)Panel Lights Control module (OSC)$1-01 Meter Illumi bulb$1-03 Front Fog Lights Illumi bulb$1-04 Hazard Warning Switch Illumi bulb$1-06 Heater Control Switch Illumi bulb$1-07 Ashtray Illumi bulb$1-08 Cruise Control Main Switch Illumi bulbBody ground
Connections (14)
TNS Relay (for USA)
TNS Relay (for USA):??Panel Lights Control module (OSC):??Red with Black stripe
Panel Lights Control module (OSC)
Panel Lights Control module (OSC):??$1-01 Meter Illumi bulb:1Red with Black stripe
Panel Lights Control module (OSC):??$1-03 Front Fog Lights Illumi bulb:1Red with Black stripe
Panel Lights Control module (OSC):??$1-04 Hazard Warning Switch Illumi bulb:1Red with Black stripe
Panel Lights Control module (OSC):??$1-06 Heater Control Switch Illumi bulb:1Red with Black stripe
Panel Lights Control module (OSC):??$1-07 Ashtray Illumi bulb:1Red with Black stripe
Panel Lights Control module (OSC):??$1-08 Cruise Control Main Switch Illumi bulb:1Red with Black stripe
$1-01 Meter Illumi bulb
$1-01 Meter Illumi bulb:2Body groundRed
$1-03 Front Fog Lights Illumi bulb
$1-03 Front Fog Lights Illumi bulb:2Body groundRed
$1-04 Hazard Warning Switch Illumi bulb
$1-04 Hazard Warning Switch Illumi bulb:2Body groundRed
$1-06 Heater Control Switch Illumi bulb
$1-06 Heater Control Switch Illumi bulb:2Body groundRed
$1-07 Ashtray Illumi bulb
$1-07 Ashtray Illumi bulb:2Body groundRed
$1-08 Cruise Control Main Switch Illumi bulb
$1-08 Cruise Control Main Switch Illumi bulb:2Body groundRed
Body ground
Body groundBody groundBlack
NOTE
Bulb pin assignments and connector pin numbers in this circuit diagram could not be read with high confidence from the scan; many individual wire color codes at the I-xx connector header tables were illegible and have been omitted rather than guessed. The high-level R/B feeder bus and R returns to the body ground are the structural backbone.