Circuit designation are labeled on each wire, Available in universal or Chevy designation to custom fit your application, Includes wiring harnesses, all connectors, brackets, flashers, and zip ties, Kit has 21 total circuits and includes 12 fuses w/ horn relay and maxi fuse, Each wire is printed with the circuit identification as well as using GM color codes for easy installation
Painless Wiring 10102 Universal 21 Circuit Wiring Harness Painless Wiring
Painless Wiring 10102 Universal 21 Circuit Wiring Harness
Sku # 91064029-UNIV
Mfr. Part # 10102
Condition
New
Brand
Painless Wiring
Sold
Each
Details
Info

This 21 circuit kit is our most widely used customizable chassis harness. You'll find that it's easily adaptable to almost any vehicle. We offer two versions, one with a preterminated GM column mounted ignition switch connector (10101 CHEV) and one without (10102 UNIV). 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.

  • 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

Connectors Included (10101 CHEV): 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.

Connectors Included (10102 UNIV): GM Steering Column Turn Switch, Two Headlight Pigtails, 10SI & 12 SI Alternator, Dimmer Switch

Choose from the Universal Harness or the GM Harness (Chevy) for use with GM column-mounted ignition switch.

This harness includes circuits for:

  1. A/C and Heat
  2. Accessory / Cigarette Lighter
  3. Backup Lights
  4. Brake Lights
  5. Charging
  6. Dome Light
  7. Electric Choke
  8. Emergency Flashers
  9. Fan Relay Activation Power
  10. Fused Power Source
  11. Headlights
  12. Horn (Relay)
  13. Ignition Coil
  14. Instrument Panel Lighting and Gauges*
  15. Park Lights
  16. Radio/Clock (Constant and Switched)
  17. Starting
  18. Tail Lights
  19. Third Brake Light
  20. Turn Signals
  21. Wipers

* Including Wires For:
Fuel Gauge
Oil Gauge
Tachometer
Temperature Gauge
Voltmeter

This harness includes circuits for:

  1. A/C and Heat
  2. Accessory / Cigarette Lighter
  3. Backup Lights
  4. Brake Lights
  5. Charging
  6. Dome Light
  7. Electric Choke
  8. Emergency Flashers
  9. Fan Relay Activation Power
  10. Fused Power Source
  11. Headlights
  12. Horn (Relay)
  13. Ignition Coil
  14. Instrument Panel Lighting and Gauges*
  15. Park Lights
  16. Radio/Clock (Constant and Switched)
  17. Starting
  18. Tail Lights
  19. Third Brake Light
  20. Turn Signals
  21. Wipers

* Including Wires For:
Fuel Gauge
Oil Gauge
Tachometer
Temperature Gauge
Voltmeter

Charts

(PDF)

Installation Tips

This harness includes circuits for:

  1. A/C & Heat
  2. Accessory / Cigarette Lighter
  3. Backup Lights
  4. Brake Lights
  5. Charging
  6. Dome Light
  7. Electric Choke
  8. Emergency Flashers
  9. Fan Relay Activation Power
  10. Fused Power Source
  11. Headlights
  12. Horn (Relay)
  13. Ignition Coil
  14. Instrument Panel Lighting and Gauges*
  15. Park Lights
  16. Radio/Clock (Constant and Switched)
  17. Starting
  18. Tail Lights
  19. Third Brake Light
  20. Turn Signals
  21. Wipers

* Including Wires For:
Fuel Gauge
Oil Gauge
Tachometer
Temperature Gauge
Voltmeter

Specs
Sold in Quantity
Kit
Number of Circuits
21
Notes
Includes wiring harnesses, all connectors, brackets, flashers, and zip ties.
MFG. Part #
10102
GTIN Code
749823101029
Compatible with GM Column
Yes
Fuse Block Included
Yes
Ignition Key Location
Dash
Fuse Style
ATO/ATC
Harness Length
Extra-Long
Reviews

There is no way I would go anywhere else for my parts.

Rated
Product Rating
by Rich with the 48 on December 14, 2021

Summary: I am not done yet, but with the directions and the easy to read wires it going smooth !

Pros: I love how painless it really is !!!

Yes, I recommend this product.

yes!

Rated
Product Rating
by Joe on August 18, 2021

Summary: easy to install..................

Cons: dig it ,,works awesome supper good

Yes, I recommend this product.

Worked perfectly for my project

Rated
Product Rating
by Lou Fig1 on March 29, 2021

Summary: I am putting a Buick 215/Ford T5 into a 1975 MGB. I completely stripped out the original wiring and used this kit to rewire the entire car.... was SUPER happy with the kit.

Yes, I recommend this product.

Awesome wiring kit

Rated
Product Rating
by Steve T on March 24, 2021

Summary: Used this in a 1928 Dodge. Works great!

Yes, I recommend this product.

It really was painless

Rated
Product Rating
by Jake on March 09, 2021

Summary: Everything comes marked very well. Definitely worth the money

Yes, I recommend this product.

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Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 72 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.