Painless Performance 20205 Classic-Plus Customizable Chassis Harness for 73-87 GM Pickup Truck, 27 Circuits

Price: $139.99 - $660.44
(as of Mar 24, 2025 08:35:07 UTC – Details)

This 27-circuit 1973-1987 GMC/Chevy Painless wiring harness was designed to fit the trucks, Blazers, and Suburbans, whether C10, C20, or C30. It features a factory style bulkhead connector, allowing for easy mounting of the fuse block in the factory location, and has many of the factory connectors already installed on the harness out of the box. Including connectors for: the headlight switch, dimmer switch, wiper motor, ignition switch, blower motor & switch, blower resistor, and instrument cluster. Each wire is custom printed with the circuit identification as well as using GM color codes for easy installation. Wire your Squarebody once and wire it right with Painless! This harness does not support factory installed TBI fuel injection or computer controlled carburetors. Doesn’t support rear power glass, rear defrost, or rear A/C/Heat – many of these items are seperate from the OE chassis harness.
Printed Wiring and Full Color Installation Manual: Every wire is printed with the circuit identification and uses GM color codes for easy installation; Paired with the highly detailed full color installation manual, Painless makes a tedious task simple
Upgraded ATO bladed fuses: Leave antiquated glass fuses in the past where they belong and update to modern bladed fuses
Machine Crimped Fuse Block: Painless uses OE style machine crimping and pre-terminates the fuse block, leaving the installer with only one end to terminate
American Made, American Proud Since 1990: Every Painless harness is proudly produced in Fort Worth, TX, where we also staff our unmatched Technical Support department.; Need help during install…simply give us a call
TXL Wire: When reliability and performance can’t be compromised, you want TXL – not the inexpensive primary wire you find in other harnesses; High strand count copper and high-quality insulation makes for high abrasion resistance and easy routing
fit type: Vehicle Specific