What does connector 51M and 53M connect to in the passenger compartment main harness?

Both 51M and 53M are fuse block connectors according to the legend on this harness layout page.

Where are the body grounds shown in this passenger compartment harness layout?

The legend lists two body grounds in this harness: connector 55M and connector 80M.

Which connectors serve the combination switch?

67M is the combination switch (wiper and washer), 68M is the combination switch (horn), and 69M is the combination switch (light & turn).

What connector goes to the fuel tank gauge unit?

Connector 78M connects to the fuel tank gauge unit.

Which connectors relate to automatic transmission (A/T) models?

50M is the inhibitor relay (A/T models) and 74M is the A/T indicator lamp (A/T models).

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Nissan Micra Main Harness Layout - Passenger Compartment Connectors (EL-63)

Nissan main harness passenger compartment layout connector map EL-63

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Main-harness passenger-compartment layout numbering connector points to components: key switch, stop lamp switch, blower motor, heater unit, door switches, fuel tank gauge unit, combination switches and body grounds.

AI caption February 2006 · Photo 409 of 412

This is page EL-63 from a Nissan factory service manual electrical section, showing the 'Harness Layout — Main Harness (Cont'd)' for the passenger compartment. A large perspective line drawing depicts the vehicle body with the main wiring harness routed through the passenger compartment and rear of the vehicle, with circled connector callouts numbered 50M through 90M. A legend identifies each connector: 50M inhibitor relay (A/T models), 51M/53M fuse block, 52M ignition relay, 55M/80M body grounds, 57M seat belt timer, 58M warning chime, 59M check connector, 60M horn relay, 61M combination flasher unit, 63M blower motor, 64M heater control switch, 65M hazard switch, 67M–69M combination switch connectors (wiper/washer, horn, light & turn), 70M key switch, 71M ignition switch, 72M stop lamp switch, 73M clock, 74M A/T indicator lamp, 75M parking brake switch, 76M/77M door switches, 78M fuel tank gauge unit, 79M/81M/85M rear lamps L.H./R.H., 86M luggage compartment lamp, 87M rear side marker lamp R.H., and 88M engine revolution unit. The page carries the illustration code SEL526I. Readers can use it to locate and identify connectors in the passenger-compartment main harness when troubleshooting electrical faults.

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Frequently asked questions

What does connector 51M and 53M connect to in the passenger compartment main harness?: Both 51M and 53M are fuse block connectors according to the legend on this harness layout page.
Where are the body grounds shown in this passenger compartment harness layout?: The legend lists two body grounds in this harness: connector 55M and connector 80M.
Which connectors serve the combination switch?: 67M is the combination switch (wiper and washer), 68M is the combination switch (horn), and 69M is the combination switch (light & turn).
What connector goes to the fuel tank gauge unit?: Connector 78M connects to the fuel tank gauge unit.
Which connectors relate to automatic transmission (A/T) models?: 50M is the inhibitor relay (A/T models) and 74M is the A/T indicator lamp (A/T models).