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| | | | Joined: Dec 2013 Posts: 224 'Bolter | | 'Bolter Joined: Dec 2013 Posts: 224 | Working on the lights of my ‘47 Chevrolet 3100. I replaced the dimmer switch. I thought I connected the new switch correctly as I used the old one as the example.
Fast forward: now connecting the inner fender wiring harness and the headlight leads. I am getting only high beams. Could be I’m just not in correctly connecting wires. I have power to the bottom 3 terminals of the fuse box. The upper 2 terminals (high and low beams);won’t light the test light on either high or low beam.
I’m now rechecking the wiring diagram and tracing the wires.
When I click the dimmer switch to high beam I at least get a current flow. When I use low beams.....nothing.
My question is: Could I have crossed/incorrectly wired the dimmer switch that would cause the hi/lo beams to not work correctly?
Will check with a meter but I thought I’d ask smarter folks for ideas. | | | | | Joined: May 2015 Posts: 11,002 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,002 | The center terminal connects to the battery feed and the outer ones to the headlights (wouldn't really matter which is which). You probably have the wires switched. If the hot is connected to one of the outer terminals and high beam feed is connected to the center terminal, you'd get exactly what you're seeing. Double check your wiring at the dimmer switch.
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 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. | | | | | Joined: Feb 2019 Posts: 4,472 AD Addict & Tinkerer | | AD Addict & Tinkerer Joined: Feb 2019 Posts: 4,472 | The center terminal connects to the battery feed Just to clarify for others that may know, the center terminal which is the feed, is coming from the headlight switch not the battery.
Last edited by Phak1; 02/01/2021 11:18 PM.
Phil Moderator, The Engine Shop, Interiors and Project Journals1952 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 BrakesProject JournalsStovebolt Gallery Forum | | | | | Joined: May 2015 Posts: 11,002 Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums | | Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums Joined: May 2015 Posts: 11,002 | Phil is correct. I should have said input to the center. 
Kevin 1951 Chevy 3100 work truckFollow this saga in Project JournalPhotos 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. | | | | | Joined: Dec 2013 Posts: 224 'Bolter | | 'Bolter Joined: Dec 2013 Posts: 224 | I suspected it was my connecting the dimmer switch wrong (operator error). Guess I was hoping it wasn’t though. Seems that dimmer switch is cleverly snuggled between the inner fender and firewall. Hehe
I appreciate your help. Snow is forecast so I’ll spend time on this in the man cave.
Thanks for your help. | | |
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