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Painless Performance

Relay, H-4 Headlight Conversion, Painless Performance, Dual Harness

Part# : PW30815
Mfg#: 30815
Sold As: Each
Ship Size: Standard
$153.99
List Price: $169.95
You Save $15.96
Calendar IconArriving Soon
Estimated the week of 10/17/2026
Fits 1964–1977 Chevelle View fitment for 62 models
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Painless Performance® Dual H4 Headlight Relay Conversion Harness

Twin weatherproof 40-amp relays and a protected battery feed deliver steadier voltage to dual H4 lamps.

Improve power delivery to a dual H4 or compatible halogen headlight system with this Painless Performance® relay harness. The system draws lamp current directly from the battery through two weatherproof 40-amp relays instead of the headlight switch, helping reduce voltage loss. A weatherproof 30-amp fuse, relay bases and mating headlight/harness connectors are included.

• For dual H4 or compatible halogen headlights • Two weatherproof 40-amp relays • Weatherproof 30-amp fuse • Direct battery-fed headlight power • Mating headlight and harness connectors

Notes

  • This item is not eligible for any further discounts or promotional pricing.
We aim to provide accurate and complete product information. If you notice anything incorrect, missing, or unclear, please let us know.
WARNING: This product can expose you to chemicals including lead, sulfur, nickel, chromium, vanadium, titanium, polyvinyl chloride, and 4,4’-methylenebis (2-chloroaniline), which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Vehicle Fitment

Year Make Model Application Details
1982 Buick Grand National headlight, H4 conversion, dual harness
1984–1987 Buick Grand National headlight, H4 conversion, dual harness
1976–1987 Buick Regal headlight, H4 conversion, dual harness
1978–1987: headlight, H4 conversion, dual harness
1963–1976 Buick Riviera headlight, H4 conversion, dual harness
1961–1972 Buick Skylark headlight, H4 conversion, dual harness
1983–1986 Buick T-Type headlight, H4 conversion, dual harness
1938–1993 Cadillac 60 Special headlight, H4 conversion, dual harness
2013–2019 Cadillac ATS headlight, H4 conversion, dual harness
1965–1976 Cadillac Calais headlight, H4 conversion, dual harness
2003–2019 Cadillac CTS headlight, H4 conversion, dual harness
1959–2005 Cadillac DeVille headlight, H4 conversion, dual harness
1953–2002 Cadillac Eldorado headlight, H4 conversion, dual harness
1999–2000 Cadillac Escalade headlight, H4 conversion, dual harness
2002–2023 Cadillac Escalade headlight, H4 conversion, dual harness
2002–2013 Cadillac Escalade EXT headlight, H4 conversion, dual harness
1965–1996 Cadillac Fleetwood headlight, H4 conversion, dual harness
1936–1951 Cadillac Series 60 headlight, H4 conversion, dual harness
1946–1964 Cadillac Series 60 Fleetwood  
1936–1951 Cadillac Series 61 headlight, H4 conversion, dual harness
1937–1976 Cadillac Series 62 headlight, H4 conversion, dual harness
1936–1951 Cadillac Series 63 headlight, H4 conversion, dual harness
1937–1938 Cadillac Series 65 headlight, H4 conversion, dual harness
1936–1942 Cadillac Series 67 headlight, H4 conversion, dual harness
1936–1937 Cadillac Series 70 headlight, H4 conversion, dual harness
1940 Cadillac Series 72 headlight, H4 conversion, dual harness
1936–1942 Cadillac Series 75 headlight, H4 conversion, dual harness
1946–1964 Cadillac Series 75 headlight, H4 conversion, dual harness
1946–1964 Cadillac Series 75 Fleetwood  
1976–2004 Cadillac Seville headlight, H4 conversion, dual harness
2005–2011 Cadillac STS headlight, H4 conversion, dual harness
2004–2009 Cadillac XLR headlight, H4 conversion, dual harness
1947–1955 Chevrolet Advance Design  
1969–1994 Chevrolet Blazer headlight, H4 conversion, dual harness
1960–1987 Chevrolet C10 headlight, H4 conversion, dual harness
1960–1987 Chevrolet C20 headlight, H4 conversion, dual harness
1960–1987 Chevrolet C30 headlight, H4 conversion, dual harness
1964–1977 Chevrolet Chevelle headlight, H4 conversion, dual harness
1960–1969 Chevrolet Corvair headlight, H4 conversion, dual harness
1961–1965 Chevrolet Corvair 95 FC headlight, H4 conversion, dual harness
1959–1960 Chevrolet El Camino headlight, H4 conversion, dual harness
1964–1987 Chevrolet El Camino headlight, H4 conversion, dual harness
1978–1987: headlight, H4 conversion, dual harness
1960–1987 Chevrolet K10 headlight, H4 conversion, dual harness
1960–1987 Chevrolet K20 headlight, H4 conversion, dual harness
1977–1987 Chevrolet K30 headlight, H4 conversion, dual harness
1978–1983 Chevrolet Malibu headlight, H4 conversion, dual harness
1997–2022 Chevrolet Malibu  
1970–1988 Chevrolet Monte Carlo 1970–1977: headlight, H4 conversion, dual harness
headlight, H4 conversion, dual harness
1978–1988: headlight, H4 conversion, dual harness
1995–2007 Chevrolet Monte Carlo headlight, H4 conversion, dual harness
1960–1991 Chevrolet Suburban headlight, H4 conversion, dual harness
1955–1959 Chevrolet Task Force headlight, H4 conversion, dual harness
1955–1959 GMC Blue Chip headlight, H4 conversion, dual harness
1960–1987 GMC C15/C1500 headlight, H4 conversion, dual harness
1960–1987 GMC C25/C2500 headlight, H4 conversion, dual harness
1960–1987 GMC C35/C3500 headlight, H4 conversion, dual harness
1978–1987 GMC Caballero headlight, H4 conversion, dual harness
1970–1991 GMC Jimmy headlight, H4 conversion, dual harness
1960–1987 GMC K15/K1500 headlight, H4 conversion, dual harness
1960–1987 GMC K25/K2500 headlight, H4 conversion, dual harness
1977–1987 GMC K35/K3500 headlight, H4 conversion, dual harness
1947–1955 GMC New Design headlight, H4 conversion, dual harness
1971–1977 GMC Sprint headlight, H4 conversion, dual harness
1960–1991 GMC Suburban  
1961–1988 Oldsmobile Cutlass 1961–1977: headlight, H4 conversion, dual harness
headlight, H4 conversion, dual harness
1978–1988: headlight, H4 conversion, dual harness
1958–1986 Pontiac Bonneville headlight, H4 conversion, dual harness
1959–1977: headlight, H4 conversion, dual harness
1978–1986: headlight, H4 conversion, dual harness
1959–1977 Pontiac Catalina headlight, H4 conversion, dual harness
1962–1987 Pontiac Grand Prix 1962–1977: headlight, H4 conversion, dual harness
headlight, H4 conversion, dual harness
1978–1987: headlight, H4 conversion, dual harness
1964–1973 Pontiac GTO headlight, H4 conversion, dual harness
1961–1981 Pontiac LeMans 1961–1973: headlight, H4 conversion, dual harness
headlight, H4 conversion, dual harness
1961–1970 Pontiac Tempest headlight, H4 conversion, dual harness
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Relay, H-4 Headlight Conversion, Painless Performance, Dual Harness
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