1964 Chevelle
1965 Chevelle
1966 Chevelle
1967 Chevelle
1968 Chevelle
1969 Chevelle
1970 Chevelle
1971 Chevelle
1972 Chevelle
Glass Fuses
All 1964-1980 vehicles use glass fuses in their fuse box with a mixture of all glass (AGC) and SFE fuses. Both the Sociiety of Fuse Engineers (SFE) and AGC are glass fuses with a meltable link within the glass. The SFE fuses all measure 1/4" in diameter. The length is determined by the amperage rating, which varies from 5/8" in length (4 amp.) to 1 7/16" in length (30 amp). The SFE fuse is also designated as "size rejecting" because the size differences are related to the amperage rating and tends to prevent interchanging different amperage ratings. The AGC fuse measures 1 1/4" in length and the diameter is 1/4" for all amperage ratings.
Typical Chevelle fuse box with directional flasher. Colored fuses
started in mid-1967 and were phased in during the course of the year
as old inventory ran out. Most replacements today in auto parts
stores are not colored.
Sample SFE fuse
Spade Fuses
Many aftermarket wiring companies offer wiring kits with spade fuses in the fuse block. Prior to 1981 most North American-built vehicle electrical systems protected by glass fuses. These are known as "SFE" fuses designed by the Society of Fuse Engineers. As with glass fuses, the spade fuses come in a variety of current amp ratings and quick blow & slo-blow types. Unless you are doing a concours restoration you might want to look into wiring kits from suppliers like American Wire or Painless that offer a wider range of accessory attachments.
Spade fuses are amp-rated by their plastic cover color and come in a variety of sizes.
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