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Part fits the following years:1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987

Painless Performance

Wiring Harness, Muscle Car 21-Circuit Classic

Part# L240316


Mfg# 20103

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SAVE: $58.96 Retail: $648.95

OPGI Price: $589.99


Part Type: (P) High Performance, designed to improve performance
Years: Sold As: EACH


  • NOTE1: Minor bulkhead modifications may be required.
  • NOTE2: These high-performance items are not eligible for further discounts or promotional pricing.

Bring your electrical system up-to-date with one of these new harnesses from Painless Performance Wiring. Aftermarket accessories can put heavy loads on factory wiring and possibly cause harm. These new harnesses use the highest quality thermal crossed-linked (TXL) polyethylene wire rated up to 275°—that's twice the load of standard wire!

Make & ModelYear RangeApplication Details
Chevrolet Chevelle1964-1977 21-Circuit Classic
Chevrolet Malibu1978-1988 21-Circuit Classic
Chevrolet El Camino1964-1977 21-Circuit Classic
Chevrolet El Camino1978-1988 21-Circuit Classic
Chevrolet Monte Carlo1970-1974 (21-Circuit Classic)
Chevrolet Monte Carlo1978-1988 21-Circuit Classic
Chevrolet Corvair1960-1969 21-Circuit Classic
Pontiac GTO1961-1973 21-Circuit
Pontiac LeMans1961-1973 21-Circuit
Pontiac Tempest1961-1973 21-Circuit
Pontiac Grand Prix1959-1977 21-Circuit Classic
Pontiac Catalina1959-1977 21-Circuit Classic
Pontiac Bonneville1959-1977 21-Circuit Classic
Olds Cutlass/4421961-1977 21-Circuit Classic
Buick Skylark1964-1972 21-Circuit Classic
Buick Riviera1963-1976 21-Circuit Classic
Buick Regal1978-1987 21-Circuit Classic
Buick T-Type1978-1987 21-Circuit Classic
Buick Grand National1978-1987 21-Circuit Classic
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