BMW Motorcycle (R1100RT, R1100RS, R850/1100GS, R850/1100R). Manual - part 52

61.7

Removing and installing central 
electrical equipment box

e

 Caution:

Switch off ignition.
Disconnect ground (earth) lead from battery.
Insulate ground (earth) lead.

•

Remove dualseat.

•

[RT] Remove small side fairing sections at left 
and right.

•

[RT] Remove luggage rack/case holder.

•

[RS/R/RT] Take off rear fairing at left and right.

•

[RT] Remove lower rear section.

•

Take out retaining screws (1) for upper section of 
central electrical equipment box.

•

Take out retaining screws (2) for lower section of 
central electrical equipment box.

•

Remove cable tray.

•

If necessary, detach complete wiring harness 
and remove it with the fuse box, or remove the 
relays and relay bases.

•

Install in the reverse order of work.

•

After assembly, shorten the rubber tag on the 
splash guard mount (arrow) to 10 mm (0.4 in).

Dismantling/assembling central 
electrical equipment box

•

See detail drawing (3).

2

3

1

RS610062

61.8

Relay positions (central electrical 
equipment box)

1. Encoding plug for Motronic and catalytic 

converter

2. Fuel gauge/display damping
3. Starter motor relay
4. Load-relief relay
5. Horn relay
6. Fuel pump relay 
7. Motronic relay 
8. ABS warning relay 
9. Not in use
10.Flasher unit 
11.Fuse

Connections to fuses: [RS/GS/R]
(No. 1 on left, looking forwards)
1. Instrument cluster,

brake and rear lights ............................. 15 Amp

2. Parking light .......................................... 15 Amp
3. Flashing turn indicators, clock ............... 15 Amp
4. Power socket ........................................ 15 Amp
5. Motronic................................................ 15 Amp
6. Fuel pump ............................................. 15 Amp
7. Heated handlebar grips ........................... 4 Amp
8. Spare fuse............................................... 4 Amp
9. Spare fuse............................................. 15 Amp
10.Spare fuse............................................. 15 Amp

Connections to fuses: [RT] 
(No. 1 on left, looking forwards)
1. Instrument cluster,

brake and rear lights ............................. 15 Amp

2. Parking light .......................................... 15 Amp
3. Flashing turn indicators, clock............... 15 Amp
4. Power socket ........................................ 15 Amp
5. Motronic................................................ 15 Amp
6. Fuel pump ............................................. 15 Amp
7. Heated handlebar grips........................... 4 Amp
8. Radio .................................................... 15 Amp
9. Spare fuse............................................. 15 Amp
10.Spare fuse............................................... 4 Amp

1

2

3

4 5

6 7

8 9

10

11

RS610070

61.9

Frame wiring harness [ABS]

e

 Caution:

Threaded earth (ground) connection at en-
gine: use galvanized (yellow) screws.
Screws with unsuitable corrosion proofing can 
cause the electrical resistance to rise as high as 
80 

Ω

. Run wiring without kinking and avoid risk of 

abrasion.
Note the number and position of the cable straps.

•

Apply a thin coating of contact grease, e.g. 
CENTOPLEX 3 CU to the central earth (ground) 
point, which must be cleaned to bright metal 
first.

L

 Note:

When removing the wiring harness, take out the 
central electrical equipment box at the same time.
When installing, fit the central electrical equipment 
box first.

X

 Tightening torque:

Ground (earth) connection to engine ............ 10 Nm

61.10

Installing wiring harness/connections 
in central electrical equipment box

RS610090

61.11

Installing wiring harness in central 
electrical equipment box/output

L

 Note:

The white marker tape (arrow) must be 
covered by the cable entry grommet.

RS610110

61.12

[RT] Wiring harness View from left

3

2

1

RT610160

61.13

1

RT610161

61.14

2

RT610162