1999 HONDA CIVIC main relay

Gonnector ldentification and Wire Harness Routing
Msin Wire Harness (Right side oI dash branch)
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c440
c441
c442
c443
c4M
c445
c446
c452
16
2
20
7
22
22
Under middle of dash
Under right side of dash
Under right side of dash
Under right side of dash
Behind right side of kick panel
Behind right side of kick panel
Under right side of dash
Under right side of dash
Heater sub-harness A (C721)
Service check connector
Junction connector
PGM-Fl main relay
ABS control unit
ABS control unit
Engine wire harness (C131)
ECM/PCM
G402Right kick panelBody ground, via main wire harness
*'l: '99 - 00 models
23-38

D
Dashboard Wire Harness
Connector ol
Terminal
Numbel of
CavitiesLocationConnects toNotes
c501
c502
c503
c504
c505
c507
c508
c509
c510
c513
c514
c515
c516
c518
c519
c520
20
24
to
12
5
3
20
5
5
14
r0
5
20
22
5
2
5
Behind dashboard lower panel
Above under-dash luse/relay box
Above under dash Iuse/relay box
Above under dash tuse/relay box
Left side of steering wheel
Left side of steering wheel
Below gauges
Behind gauges
Behind gauges
Behind gauges
Behind gauges
Behind gauges
Right side ot gauges
Right side oI gauges
Beh ind middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind middle of dash
Behind gauges
Under-dash {use/relay box (C912)
Main wire harness 1C411)
Floor wire harness (C553)
Main wire harness (C410)
Cruise main switch
Dash lights brightness controller
Junction connector
Gauge assembly
Gauge assembly
Gauge assembly
Gauge assembly
Gauge assembly
Hazard warning switch
Rear window defogger switch
Audio unit (Keyless receiver circuit)
Audio unit
Security control unit
Audio unit
Security system
Accessory power outlet
Gauge assembly
A"r
SRS
A,/r
Optio nal*'
Option al*'
ABS
G501Under middle ol dashBody ground, via dashboard wire harness
*1: With shiit-up indicator or cruise control system ('96 - 97 models)
With cruise control system ('98 model)
c509 C511 c510 c515
13 lc5l7
*2: '96 98 models*3: '99 - 00 models
c508
DASHSOARD WIREHARNESS
c501
c520
c502 c504
23-39

Gonnector ldentification and Wire Harness Routing
Floor Wire Harness lCoupe/Haichbackl
Connsclor or
Terminal
Number of
CavitiesLocationConnects toNotes
c551
c552
c553
c554
c556
c556
c557
c558
c560
c561
c562
c564
c56s
16
8'16
14
20
2
25,)
,I
2
1
14
20
2
2?
1
10
Behind underdash fuse/relay box
Behind under-dash fuse/relay box
Above under-dash fuse/relay box
Under left side of dash
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Driver's door
Driver's door
Passenger's door
Passenger's door
Middle of floor
Left side offloor
Left B-pillar
lnside of left rear wheel
Left c-pillar
Left C-pillar
Left C-pillar
Fueltank
Fueltank
Inside of right rear wheel
Right B-pillar
Fueltank
Left side ot dash
Under-dash fuse/relay box {C923)
Under-dash fuse/relay box (C921)
Dashboard wire harness {C503)
Main wire harness (C402)
Main wire harness (C401)
Main wire harness {C401)
Driver's door wire harness (C631)
Driver's door wire harness (C631)
Passenger's door wire harness (C651)
Passenger's door wire harness (C651)
Parking brake switch
Driver's seat belt switch
Driver's door switch
Left rear ABS wheel sensor
Rear wire harness (C601)
Rear wire harness (C601)
Rear wire harness {C602}
Fuel gauge sending unit
Fuel pump
Right rear ABS wheel sensor
Passenger's door switch
Fuel tank pressure sensor sub-harness(c791)
Power mirror switch
ABS
ABS
ABS
G551
G552
Left kick panel
Left side of floor
Body ground, via floor wire harness
Body ground. via floor wire harness
*1r With power windows*2: Without power windows*3: D16Y8 engine {Coupe)
*4: '96 - 98 models*5: '99 - 00 models
23-40

Gonnector ldentification and Wire Harness Routing
Connector ol
Terminal
Number of
CavitiesLocationConnects toNotes
c553
c554
c556
c557
c557
c558
c559
c560
c561
c562
c563
c564
c565
c566
c567
L5bY
c570
c511
c572
c513
6
14
25
2
25
'|
1
2't4
1'10
6
6
I
1
Behind underdash fuse/relay box
Behind under-dash fuse/relay box
Above under-dash fuse/relay box
Under left side of dash
Above under-dash fuse/relay box
Drlver's door
Driver's door
Passenger's door
Passenger's door
Middle of floor
Left side of floor
Right B-pillar
lnside of left rear wheel
Left C-pillar
Left C-pillar
Fuel tank
Fuel tank
Inside of right rear wheel
Left B-pillar
Left side of steering wheel
Right B-pillar
Left B-pillar
Left quarter panel
Right quarter panel
Under-dash fuse/relay box {C923)
Under-dash fuse/relay box (C921)
Dashboard wire harness (C503)
Main wire harness (C402)
Main wire harness (C401)
Driver's door wire harness (C631)
Driver's door wire harness (C631)
Front passenger's doorwire harness (C651)
Front passenge/s doorwire harness (C651)
Parking brake switch
Driver's seat belt switch
Front passenger's door switch
Left rear ABS wheel sensor
Rear wire harness (C601)
Rear wire harness (C602)
Fuel gauge sending unit
Fuel pump {FP)
Right rear ABS wheel sensor
Driver's door switch
Power mirror switch
Right rear door wire harness (C671)
Left rear door wire harness (C661)
Left rear door switch
Right rear door switch
ABS
ABS
ABS
G552
Left kick panel
Left side of floor
Body ground, via floor wire harness
Body ground, via floor wire harness
Floor Wire Harness lSedanl: '96 model
*l:With power windows*2; Without power windows
23-42

Gonnector ldentification and Wire Harness Routing
Floor Wire Harness (Sedanl: '97 - 00 models
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c552
c553
c554
c555
c556
c557
c557
c558
c559
c560
c56'l
c562
c563
c564
c566
c568
c569
c570
c571
c572
16
8
14
20
25
2
2
1
2
1
20
2
2
2
1
l0
1
1
Behind under-dash fuse/relay box
Behind under dash fuse/relay box
Above under-dash fuse/relay box
Under left side of dash
Above under-dash fuse/relay box
Above under-dash fuse/relay box
Driver's door
Driver's door
Passenger's door
Passenger's door
Middle of floor
Left side of floor
Right B-pillar
Inside of left rear wheel
Left C-pillar
Left C-pillar
Left C-pillar
Fuel tank
Fuel tank
Inside of righr rear wheel
Left B-pillar
Fuel tank
Left side of steering wheel
Righr B,pillar
Left B pillar
I ofr ^,,.riar ^.^al
Right quarter panel
Under-dash fuse/relay box (C923)
Under-dash fuse/relay box (C921)
Dashboard wire harness (C503)
Main wire harness (C402)
Main wire harness (C401)
Main wire harness (C401)
Driver's door wire harness (C631)
Driver's door wire harness {C631}
Front passenger's door wire harness (C651)
Front passenger's door wire harness (C651)
Parking brake switch
Driver's seat belt switch
Front passenger's door switch
Left rear ABS wheel sensor
Rear wire harness (C601)
Rear wire harness (C601)
Rear wire harness (C602)
Fuel gauge sending unit
Fuel pump (FP)
Right rear ABS wheel sensor
Driver's door switch
Fuel tank pressure sensor sub-harness(c791)
Power mirror switch
Right rear door wire harness (C671)
Left rear door wire harness (C661)
Left rear door switch
Right rear door switch
ABS
ABS
ABS
G551Left kick panel
Left side of floor
Body ground, via floor wire harness
Body ground, via floor wire harness
"1r With power windows*2: Without power windows
*3:'97 - '98 models*4: '99 - 00 models
23-44

Connector ldentification and Wire Harness Routing
Roof Wire Harness (Coupe/Hatchback)
Connector ol
Terminal
Number of
CavitiesLocationConnects toNotes
c701
c701
c702
c719
2
6
2
1
Under left side of dash
Under left side of dash
Middle of roof
Front of roof
Main wire harness (C407)
Main wire harness (C407)
Ceiling light
S potlig ht*1: '96 - 98 models*2: '99 - 00 models
Roof Wire Harness (Sedanl
'96 - 98 models'99 - 00 models
*1: '96 - 97 models"2: '98 model*3: '99 00 models
*l:
+2:
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c701
c701
c702
c703
c719
2
1
1
1
Under left side of dash
Under left side of dash
Middle of roof
Middle of roof
Front of roof
Main wire harness (C407)
Main wire harness (C407)
Ceiling light (Power)
Ceiling light (Ground)
Spotlighr
Moonroof Wire Harness {Coupe/Sedan}
Connector or
Terminal
Number ot
CavitiesLocationConnects toNotes
c711
c711
c1't2
c713
c713
c714
c714
c715
c117
c718
c719
2
6
6
5
5
4
3
2
4
1
U nder left side of dash
Under left side of dash
Behind dashboard lower panel
Left side of dashboard bracketLeft side of dashboard bracket
Left side of dashboard bracket
Left side of dashboard bracket
Left side of steering wheel
Middle of roof
Rear of roof
Rear of roof
Front of roof
Main wire harness (C407)
Main wire harness (C407)
Under-dash tuse/relay box (C910)
Moonroof open relay
Moonroof open relay
Moonroof close relay
Moonroof close relay
Moonroof switch
Ceiling light
Moonroof motor
Moonroof motor (Tilt switch)Sporlight
Optional
23-54

'
Heater Sub-harness A: '99 - 00 models
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c721
c722
c723
c724
c725
c726
c727
c728
c729
c730
7
24
3
2
4
1
5
4
Under left side of dash
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Behind glove box
Main wire harness (C440)
Mode control motor
Heater sub-harness B (C741)
lilc thermostat
Blower motor
Power transistor
Recircuiation control motor
Heater sub-harness B (C744)
Air mix control motor
Blower motor high relaY
Heater Sub-harness B: '99 - 00 models
HEATER SUB.HARNESS A
Connector or
Terminal
Number of
CavitiesLocationConnects toNotes
c7 41
c'742
c143
c744
20
8
20
1
Behind glove box
Behind middie of dash
Behind middle of dash
Behind glove box
Heater sub-harness A (C723)
Heater control Panel
Heater control Panel
Heater sub-harness A (C728)

rt
SRS Main Harness
Conneclor or
Terminal
Number of
CavitiesLocationConnects toNotes
c801
c802
c803
c804
c805
c806
c807
2?
2
2
2
18
Under left side of dash
Above under-dash fuse/relaY
DOX
Right side of under-dash fuse/
relay Dox
Under left side of dash
Under right side of dash
Middle of floor
Middle of floor
Under-dash fuse/relay box (C911)
N4ain wire harness (C412)
Memory erase signal {MES) connector
Cable reel
Passenger's airbag assemblY
Dummy resastor connector
SRS unit
USA
Canada
G801Middle of floorBody ground, via SRS main harness
SRS MAIN HARNESS
23-61