Hi All, I've been removing everything on my dash in preparation for taking it back to bare metal. I feel like a complete buffoon, but I cannot find a "release button" described for the headlight knob in most posts about GM headlight switches. Does the AD headlight switch have a "release button"? If it does, is anyone able to be a little more specific than "behind the dash"? Also wondering if this switch can be reused for 12V when I finish the electrical conversion.
'53 GMC 3100 "I think your obsession with auto shop stems from your unresolved feelings about your father" -Bobby Hill
There's a picture of it in the 1948-1952 Shop Manual on page 12-37.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
Should help you locate the push pin to release the shaft. On the 12V use question, yes it'll work.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
Make sure the battery ground cable (at least) is disconnected before trying to remove the headlight switch. There are unshielded connections on the switch that are hot with the key off.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12 '52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
Also, when you press the release button you have to twist the knob in fully in one direction (not sure which, so try both), before it will allow you to pull the knob and shaft straight out, allowing access to the slotted nut on the outside of the dash. Use a large screwdriver to remove that nut.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum
Somewhere there's a repair tutorial I wrote around 4 years ago...was supposed to become a Tech Tip but that hasn't happened yet so we'll need to hunt. If the switch doesn't work as a new one should those instructions ought to help make that happen. I'll do some looking and see if I can find it...
I’ll try to use this to repair the switch. I may replace the knob itself so that I can have a nice and shiny dash, but at the very least this should help me save $50. Thank you!
'53 GMC 3100 "I think your obsession with auto shop stems from your unresolved feelings about your father" -Bobby Hill
Somewhere there's a repair tutorial I wrote around 4 years ago...was supposed to become a Tech Tip but that hasn't happened yet so we'll need to hunt.
Jon, in the meantime, since you are a Moderator for the Electrical Shop, make it a Sticky Thread, so it don’t get lost!
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum
Jon G - It looks like it's covered. That link now shows as a "sticky" at the top of the "Electrical Bay" forum list.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum