I had never heard of switchback bulbs so I went to Google. This website says a load equalizer may be needed with these bulbs.


"It's just a phase. He'll grow out of it." Mama, 1964

1956 Chevy 1/2-ton 3100
1953 Chevy 6100 "The Yard dog"
1954 GMC Suburban Now with a new proud owner.