I have a new aftermarket turn signal switch for my 1947 Chevrolet 3100 pickup. It's the kind that mounts just beneath the steering wheel with a big clamp. In studying the instructions for installation one of the 7 wires on the new unit is to go to the brake switch and I don't see a brake switch as such. Can anyone offer any advice, please? Thanks! ray durham
Your brake light switch should be under the floorboard where the brake pedal can actuate it. What you need to do is take the output wire off of that switch (the one that runs to the brake lights) and run it to the one labeled Brake Switch on the turn signal switch. You'll also need to run an additional wire from the Turn Signal Switch to the brake lights, breaking the connection between the right and left bulbs. I can sketch up a diagram in a bit.
[on edit]Here’s a diagram.
Last edited by klhansen; 05/17/20268:45 PM. Reason: can't spell
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
The AD series brake light switch mounts in the same place as your '46, John.
Last edited by klhansen; 05/17/20269:09 PM. Reason: added picture
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
Ray: 100% of early Chevy pickups came with one light assembly at the left rear. Dealer installed option for a right side tail light.
If the right tail light is installed on yours, remove the brake wire from its source (likely the left side brake light wire) and connect it to the wire on the turn signal switch marked right rear turn signal and brake.
From the factory there will be one wire that runs from the brake light switch to the left rear tail light. Remove that wire from the brake light switch and connect it to the wire on the turn signal switch marked left rear turn signal and brake. Then run a new wire from the empty connector on the brake light switch to the wire on the turn signal switch marked brake light.
Last edited by Bill Hanlon; 05/17/20269:37 PM.
'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.
Bill, Do you mind if I call you for more clarification? What is your cellphone number? Mine is "removed for security of member". My email address is "removed for security of member" Thanks, ray durham
Last edited by Gdads51; 06/24/20261:45 PM. Reason: updated to remove personal contact info from public view
'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.
Ray and Bill - A big X2 to what Gord mentions in his reply. Putting personal contact info here for anybody to see may get you some really unwanted communications. Grrrr!
Be safe and share in a PM instead of the open forums.
PS - I sent you a joint PM.
~ 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)
