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  • Painless Wiring 60101 GM Throttle Body Injection Engine Harness
    Painless Wiring 60101 GM Throttle Body Injection Engine Harness
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                The GM Throttle Body Injection system this Painless Performance harness operates is a perfect upgrade for those fed up with their carburetor fueled engine. Complete stand alone harness allows you to install late model GM fuel injected engine and correct computer into almost any chassis. Harness includes all connections for fuel injection operation: ECM, MAP, O2, TPS, ESC, IAC, IAT, CTS, Knock, Injectors, OBD1 w/SES light, VSS and TCC solenoid. 

    This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount. Perfect for those that plan to mount these components under the dash or in the glove box.

    Besides the obvious economy and driveability benefits, check out these other great features that make it easy and painless to install:
    • Foolproof factory connections
    • ALDL (diagnostic) plug
    • Computer controlled fuel pump provision
    • GM color code
    • Closed loop design

    GM Throttle Body Injection Wiring Instructions (PDF)

  • Painless Wiring 60102 1986-1989 GM Tuned Port Mass Air Engine Harness
    Painless Wiring 60102 1986-1989 GM Tuned Port Mass Air Engine Harness
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                Take advantage of GM's electronic engine management system with this Painless Wiring Harness. Complete stand alone harness allows you to install late model GM fuel injected engine and correct computer into almost any chassis. Harness includes all needed connections for fuel injection operation: ECM, MAF, O2, TPS, ESC, IAC, IAT, CTS, Knock, Injectors, OBD1 w/SES light, VSS and TCC solenoid. 

    This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount. Perfect for those that plan to mount these components under the dash or in the glove box.

    Besides the obvious economy and driveability benefits, check out these other great features that make it easy and painless to install:
    • Foolproof factory connections
    • ALDL (diagnostic) plug
    • Computer controlled fuel pump provision
    • Wired for 2004R or 700R4 transmission and EGR solenoid
    • GM color code
    • Closed loop design

    1986-1989 GM TPI Mass Air Flow Wiring Instructions (PDF)

  • Painless Wiring 60217 1999-2005 GM Vortec Engine Harness
    Painless Wiring 60217 1999-2005 GM Vortec Engine Harness
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                Please view the product's page for more information
            
  • Painless Wiring 60508 1999-2002 GM LS1 Engine Harness
    Painless Wiring 60508 1999-2002 GM LS1 Engine Harness
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                Take advantage of GM's electronic engine management system with this Painless Wiring Harness. Complete stand alone harness allows you to install late model GM fuel injected engine and correct computer into almost any chassis. 

    Besides the obvious economy and driveability benefits, check out these other great features that make it easy and painless to install:
    • Foolproof factory connections
    • ALDL (diagnostic) plug
    • Computer controlled fuel pump provision
    • GM color code
    • Closed loop design
    • Complete information manual

    1999-2002 GM LS1 Wiring Instructions (PDF)

  • Painless Wiring 60502 1992-1997 GM LT1 Engine Harness
    Painless Wiring 60502 1992-1997 GM LT1 Engine Harness
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                Take advantage of GM's electronic engine management system with this Painless Wiring Harness. Complete stand alone harness allows you to install late model GM fuel injected engine and correct computer into almost any chassis. Harness includes all connections needed for fuel injection and transmission operation: ECM, Ignition Module, IAT, CTS, Coil, Left & Right O2, EGR, MAP, IAC, Knock, Air Pump Relay, MAF, Fuel Pump Relay, Canister Purge Solenoid, VSS and 4L60E Transmission. 

    Harness includes its own fuse block with ignition relays. 4 feet of harness between ECM connections and main engine breakout gives ample room for custom installation and mounting of ECM behind dash, in the kick panel or glove box.

    Besides the obvious economy and driveability benefits, check out these other great features that make it easy and painless to install:
    • Foolproof factory connections
    • ALDL (diagnostic) plug
    • Computer controlled fuel pump provision
    • GM color code
    • Closed loop design

    1992-1997 GM LT1 Wiring Instructions (PDF)

  • Painless Wiring 60509 1999-2002 GM LS1 Engine Harness, Extended
    Painless Wiring 60509 1999-2002 GM LS1 Engine Harness, Extended
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                Please view the product's page for more information
            
  • Painless Wiring 60103 1990-92 GM TPI Speed Density Engine Harness
    Painless Wiring 60103 1990-92 GM TPI Speed Density Engine Harness
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    Take advantage of GM's electronic engine management system with this Painless Wiring Harness. Complete stand alone harness allows you to install late model GM fuel injected engine and correct computer into almost any chassis. Harness includes all needed connections for fuel injection operation: ECM, MAP, O2, TPS, ESC, IAC, IAT, CTS, Knock, Injectors, OBD1 w/SES light, VSS and TCC solenoid. 

    This standard length harness allows four feet from the back of the intake manifold to where the fuseblock and ECM mount. Perfect for those that plan to mount these components under or behind the dash or glove box.

    Besides the obvious economy and driveability benefits, check out these other great features that make it easy and painless to install:
    • Foolproof factory connections
    • ALDL (diagnostic) plug
    • Computer controlled fuel pump provision
    • Wired for 2004R or 700R4 transmission and EGR solenoid
    • GM color code
    • Closed loop design

    1990-1992 GM TPI Wiring Instructions (PDF)

  • Painless Wiring 60218 1999-2005 GM Vortec Engine Harness, Extended
    Painless Wiring 60218 1999-2005 GM Vortec Engine Harness, Extended
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                Please view the product's page for more information
            
  • Painless 20102 1969-1974 GM Muscle Car 25 Circuit Wiring Harness
    Painless 20102 1969-1974 GM Muscle Car 25 Circuit Wiring Harness
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    One thing to never forget - the wiring in your muscle car is forty years old and updating to modern and safe components is easy. These Painless Wiring harnesses feature many pre-wired connections and are color coded to make installation a snap. Instructions included.

    This 25 circuit harness was designed to fit the following 1969-1974 GM muscle cars: Camaro/Firebird, Nova, El Camino, Monte Carlo, Apollo, Chevelle, Cutlass, Skylark, Tempest, and GTO. This harness features a pre-wired factory style bulkhead connector that plugs directly into the back of the fuse block in the factory location. Factory original quick connect terminals are included for the in dash printed circuit board.  Pre-terminated plugs for a column mounted ignition switch, dimmer switch, headlights & headlight switch, blower motor, wiper motor, and turn signal switch. Included with this harness you'll also find a detailed manual and each wire is custom printed with the circuit identification as well as using GM color codes for easy installation.

    1969-1974 GM Muscle Car Wiring Instructions (PDF)

  • Painless 20110 1966-1967 Chevy II/Nova 21 Circuit Wiring Harness
    Painless 20110 1966-1967 Chevy II/Nova 21 Circuit Wiring Harness
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    One thing to never forget - the wiring in your muscle car is forty years old and updating to modern and safe components is easy. These Painless Wiring harnesses feature many pre-wired connections and are color coded to make installation a snap. Instructions included.

    This 21 circuit customizable Chevy II/Nova harness has many of the factory connectors already installed on the harness out of the box. Including: the headlight connectors & switch, fuel gauge connnector, dimmer switch, brake switch, heater switch, blower resistor, wiper switch, backup switch, horn, dash light sockets, and warning light sockets. This harness is split into three sections (engine, dome light, & rear) for easy installation and troubleshooting. You'll also find in this kit a harness for the factory air, a high output alternator pigtail with the connector installed, two door jam switches, 12 instrument panel light bulbs, eight harness mounting clamps, a custom Painless mounting plate for the fuse block, and each wire is custom printed with the circuit identification as well as using GM color codes for easy installation.

    1966-1967 Chevy II Nova Wiring Instructions (PDF)

  • American Autowire 500467 1947-54 Chevy Pick-up Wiring Harness
    American Autowire 500467 1947-54 Chevy Pick-up Wiring Harness
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    The wiring in your classic pick-up is about fifty years old and probably not up to the task anymore. These harnesses plug into many of the original switches and connectors, but include:

    • modern fuse panel
    • ignition switch
    • headlight switch
    • dimmer switch
    • connectors for tilt columns
    • alternators
    • dome lights
    • head and tail lights, etc.

    Everything is color coded and instructions are included. It's a painless process. For 12 Volt upgrades.

  • Painless 10123 1966-1976 Ford Muscle Car 21 Circuit Wiring Harness
    Painless 10123 1966-1976 Ford Muscle Car 21 Circuit Wiring Harness
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    One thing to never forget - the wiring in your muscle car is forty years old and updating to modern and safe components is easy. These Painless wiring harnesses feature many pre-wired connections and are color coded to make installation a snap. This customizable 21 circuit harness can be used in almost any application where you want Ford color coded wires. This harness uses our unique covered micro-fuse block.  Also featured is an auxiliary circuit with 20 amp relay for accessories such as fog lights, or an electric fuel pump. Each wire is custom printed with the circuit identification for easy installation.

    Designed for 1966-1976 Ford muscle cars including Galaxie, LTD, Falcon, Fairlane, Mustang, Maverick, Torino, and Ranchero.

    NOTE: Will not work with Thunderbirds. 

    1966-1976 Ford Muscle Car Wiring Instructions (PDF)

  • Painless 20101 1967-1968 Camaro/Firebird 24 Circuit Wiring Harness
    Painless 20101 1967-1968 Camaro/Firebird 24 Circuit Wiring Harness
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    One thing to never forget - the wiring in your muscle car is forty years old and updating to modern and safe components is easy. These Painless Wiring harnesses feature many pre-wired connections and are color coded to make installation a snap. Instructions included.

    This 24 circuit harness is designed for the 1967 and 1968 Camaro & Firebird. It uses a '69 and newer style bulkhead connector design along with blade fuses and enough circuits to wire up just about any installed upgrade to your 1st generation F-body. Some minor bulkhead modification required. Factory original quick connect terminals are included for the in dash printed circuit board.  Pre-terminated plugs for a column mounted ignition switch, dimmer switch, headlights & headlight switch, blower motor, wiper motor, and turn signal switch. Included with this harness you'll also find a detailed manual and each wire is custom printed with the circuit identification as well as using GM color codes for easy installation. 

    1967-1968 Camaro/Firebird Wiring Instructions (PDF)

  • Painless Wiring 60109 700R4 Transmission Torque Converter Lock-Up Kit
    Painless Wiring 60109 700R4 Transmission Torque Converter Lock-Up Kit
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                Now there's an inexpensive way to automatically lock up the torque converter in 4th gear without the need for a computer. No need to worry about the speed sensor either! This 700R-4 transmission torque converter lock-up kit lets you run your carbureted engine with an economical overdrive transmission. 

    This 700R4 transmission torque convertor kit includes new 4th gear pressure switch, new converter lock-up solenoid, new vacuum control switch, new brake control switch, color coded wiring harness, factory connectors, transmission pan gasket and easy-to-follow instructions. For 700R-4 transmission application

    NOTE: Minor transmission disassembly is required.

    700R4 Transmission Lock-Up Harness Installation Instructions(PDF)

  • Painless Wiring 20120 1964-1966 Mustang 22 Circuit Wiring Harness
    Painless Wiring 20120 1964-1966 Mustang 22 Circuit Wiring Harness
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    One thing to never forget - the wiring in your muscle car is forty years old and updating to modern and safe components is easy. Owners and restorers of 1964 to 1966 first generation Mustangs can take comfort in the fact that there is now an electrical system upgrade from Painless to completely rewire this classic car. These Painless wiring harnesses feature many pre-wired connections and are color coded to make installation a snap.

    This 22 circuit direct fit 1965-1966 Mustang harness has many of the factory connectors already installed on the harness out of the box.  This harness uses our unique covered micro-fuse block.  Also featured is an auxiliary circuit with 20 amp relay for accessories such as fog lights, or an electric fuel pump. Each wire is custom printed with the circuit identification as well as using Ford color codes for easy installation.  NOTE: THIS WILL NOT FIT 1964 1/2 MUSTANGS

    1964-1966 Mustang Wiring Instructions (PDF)

    Note: Some firewall modifications required.

  • American Autowire 500481 1955-59 Chevy Pick-up Wiring Harness
    American Autowire 500481 1955-59 Chevy Pick-up Wiring Harness
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    The wiring in your classic pick-up is about fifty years old and probably not up to the task anymore.These harnesses plug into many of the original switches and connectors, but include:

    • modern fuse panel
    • ignition switch
    • headlight switch
    • dimmer switch
    • connectors for tilt columns
    • alternators
    • dome lights
    • head and tail lights, etc.

    Everything is color coded and instructions are included - it's a painless process. For 12 Volt upgrades.