GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 Lucerne 🢒 Power and Signal Distribution 🢒 Wiring Systems and Power Management 🢒 Harness Routing Views
Figure 1:

Front Fascia and Headlight Harnesses
Object Number: 1703062 Size: LF
(1)X113
(2)Fuse Block - Underhood X1
(3)G104
(4)X120
(5)J124
(6)X114
(7)J125
(8)Front Fascia
Figure 2:

Front of the Engine (L26)
Object Number: 1920212 Size: LF
(1)J101
(2)X110
(3)J109
(4)J108
(5)J106
(6)X101
(7)X111
(8)G100
Figure 3:

Rear of the Engine (L26)
Object Number: 1920191 Size: LF
(1)J116
(2)J115
(3)G114
(4)X108
(5)J114
(6)J113
Figure 4:

Front of the Engine (LD8)
Object Number: 1920013 Size: LF
(1)J105
(2)J106
(3)G115
(4)X101
(5)G112
(6)G114
(7)J100
(8)X139
(9)J111
Figure 5:

Rear of the Engine (LD8)
Object Number: 1920127 Size: LF
(1)J110
(2)J102
(3)X138
(4)X140
(5)G111
(6)G100
(7)J113
(8)J114
(9)X161
(10)X111
Figure 6:

Body Harness - Front Engine Compartment
Object Number: 1920226 Size: LF
(1)J127
(2)X100
(3)X111
(4)J126
(5)G101
(6)X120
(7)J128
(8)J129
Figure 7:

I/P Harness
Object Number: 1703111 Size: LF
(1)X208
(2)J206
(3)J202
(4)J212
(5)J210
(6)J200
(7)X219 (AN3)
(8)J207
(9)J208
(10)X201
(11)X203
(12)J203
(13)J213
(14)J229
(15)X202
(16)J211
(17)J230
(18)X200
Figure 8:

Body Harness - Left Front Passenger Compartment
Object Number: 1920490 Size: LF
(1)J302
(2)X710
(3)X315
(4)J379
(5)J378
(6)X201
(7)X500
(8)X205
(9)X207
(10)X216
(11)X340 (A51)
(12)G305
(13)G300
Figure 9:

Body Harness - Right Front Passenger Compartment
Object Number: 1920466 Size: LF
(1)X206
(2)X200
(3)J377
(4)J376
(5)X600
(6)X325
(7)X326
(8)X314
(9)X810
(10)J343
(11)J370
(12)G302
(13)G304
Figure 10:

Body Harness - Left Rear Luggage Compartment
Object Number: 1920499 Size: LF
(1)X901
(2)X498
(3)X321
(4)X311 (AY0)
(5)G306
(6)J366 (UQA)
(7)X445
(8)J372
(9)G301
(10)J365
(11)J385
(12)G402
Figure 11:

Body Harness - Right Rear Luggage Compartment
Object Number: 1920506 Size: LF
(1)J324
(2)G306
(3)X397 (CF5)
(4)X499
(5)X900
(6)G403
(7)J316
(8)X497
Figure 12:

Driver and Passenger Doors
Object Number: 1920519 Size: LF
(1)X501
(2)X500
(3)X601
(4)X600
Figure 13:

Rear Passenger Doors
Object Number: 1920645 Size: LF
(1)X700
(2)X810
(3)X710
(4)X800
Figure 14:

Driver Seat Harness
Object Number: 1703060 Size: LF
(1)X319
(2)X318
(3)Seat Frame
(4)J305
(5)J356
(6)J352
(7)J355
(8)J359
(9)J351
(10)J349
(11)X315
Figure 15:

Passenger Seat Harness
Object Number: 1703059 Size: LF
(1)J358
(2)X354 (AE8/A45)
(3)Seat Frame
(4)J360
(5)J357
(6)J306
(7)X314
(8)J348
Figure 16:

Headliner Harness (- CF5)
Object Number: 1703064 Size: LF
(1)Headliner
(2)J385
(3)J328
(4)J313
(5)J312
(6)X321
Figure 17:

Headliner Harness (CF5)
Object Number: 1703065 Size: LF
(1)J334
(2)X399
(3)J385
(4)J328
(5)J312
(6)J313
(7)X321
(8)Headliner
Figure 18:

Rear Fascia Harness
Object Number: 1703061 Size: LF
(1)X494 (UD7), X495 (-UD7)
(2)J401
(3)J404
(4)Rear Fascia
(5)J402
(6)J400