21 Circuit Classic Customizable Chassis Harness - GM Keyed Column P/N 10101


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Part Number: 10101
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*NOTE* If you are using an older harness with a Maxi Fuse - CLICK HERE for your installation manual.
Looking for connectors to be included as well as a newly updated design? Check out the PRO Series Harness! CLICK HERE
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This Painless Performance 21 circuit chassis harness is our most widely used customizable automotive wiring harness.
This universal kit is great for hot rod or street rod builds, but you'll find that it's easily adaptable to almost any vehicle and has enough length to handle full size and muscle cars. This kit comes with a pre-terminated GM column mounted ignition switch connector. Included with this harness are the following parts; a GM engineered fuse block & Painless mounting bracket; GM turn signal connectors; pre wired plugs for the headlights & dimmer switch; and each wire is printed with the circuit identification as well as using GM color codes for easy installation.
Wire your classic car once and wire it right with a Painless Customizable wiring harness.
Prop 65 Warning

Number of Circuits: 21 Circuit - 12 Fuses w/ Horn Relay and Maxi Fuse
Harness Length: Universal
Fuse Type: Blade
Firewall Passthrough: Grommet
Color Code Based: GM
Circuit Designations: Printed on wire
GM Steering Column Turn Switch and Ignition Switch, Dimmer Switch, Two Headlight Pigtails, 10SI & 12 SI Alternator, HEI Power and Tach and 20 Extra 56 Series Terminals for use with any Factory GM 56 Series Connector such as Headlight Switch, Wiper Switch or A/C Switch/Blower Motor.
Connections Included:
This harness includes circuits for:
- A/C & Heat
- Accessory / Cigarette Lighter
- Backup Lights
- Brake Lights
- Charging
- Dome Light
- Electric Choke
- Emergency Flashers
- Fan Relay Activation Power
- Fused Power Source
- Headlights
- Horn (Relay)
- Ignition Coil
- Instrument Panel Lighting and Gauges*
- Park Lights
- Radio/Clock (Constant and Switched)
- Starting
- Tail Lights
- Third Brake Light
- Turn Signals
- Wipers
* Including Wires For:
Fuel Gauge
Oil Gauge
Tachometer
Temperature Gauge
Voltmeter