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1988 Chevy full size reverse polarity door lock diagram


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I need help on getting the door locks to work on a 1988 Chevy full size truck. I have the wires located under the front rt speaker but the relays are kicking my but. the alarm has a negative trigger for both the lock and unlock.

PPI dbl din
DC Level 3
1.77cubes net tuned to 33htz.
DC audio 2.0k
CT Pro Audio 8" in front, 6.5 in rear






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-Installer for Duke's Car Stereo

2000 Pontiac Grand Prix - Ported Eaton M90 S/C, 3.5" pulley, XS Power Headers, 1.9 Rockers, FWI, Poly Motor Mounts, Custom Tune.

RF T1000-1bdCP and T400-4

Boston Acoustics SPG 555

Kenwood eXcelon 995

RF Punch 6.5" components and MB Quart Premium 6x9"s

Powermaster Alternator, YellowTop D34, Vmax CT1000

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That is old I've only done one of those year,starting to work on less and less 88-98 body chevy's.

2007 Scion Tc- T1500.1bdcp & t600.4, Three P3D212's Ported at 40hz, T2 6.5" Components, Rockford Marine 8" coax's. Kinetik khc1400 in back, Kicker 0 gauge

1999 Cherokee- Rockford Prime Amps 300.4 & 500.1,Big 3, Rockford 6.5"Comp.s and 6.5" 2ways, 2 12" P2's Ported basic winter beater

2002 Mustang Convt.-T1500.1bd & 400.4, 3 P3D210's IB, JBL components all the way around,Rockford 4 gauge, Big 3, Kinetik khc800 in back

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