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| | | | Joined: Nov 2011 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2011 Posts: 103 | I have a '48 big bolt and I'm sorting out the wiring. If I have continuity from high to low beam and from low or high to ground would that mean a bad light switch? (Everything else being ok) | | | | | Joined: Oct 2010 Posts: 1,232 'Bolter | | 'Bolter Joined: Oct 2010 Posts: 1,232 | I found the same continuity between all three terminals on the bulb - not installed in the truck. I was checking the 12v headlight bults in my '54 last week for condition and to determine which terminal is High / Low / Ground. Haven't reinstalled them yet. Kinda confusing - don't know why.
- Lonnie My '54 3104Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post. lonniecook [at] aol [dot] com. I sold my '54 3104 12/12/2017, but I still visit Stovebolt. OLD STUFF ... houses, furniture, cars, wine ... I love it all | | | | | Joined: Nov 2009 Posts: 239 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 239 | Check the hi/low beam foot switch (on the toe board near the parking brake). That is where the two wires meet. The switch could be bad.
Last edited by di1953gmc; 03/23/2012 1:40 PM.
When I die, I want to go peacefully like my Grandfather did, in his sleep -- not screaming, like the passengers in his car.
-Unknown-
| | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Guys, the headlights have two different powered terminals, but they have only one common ground terminal, that is why there is continuity between all three terminals on the headlight, hope that helps. | | | | | Joined: Nov 2011 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2011 Posts: 103 | Thanks guys for all your input, but should there be continuity at the inner fender terminal block (high beam, low beam, park)and ground? If I have one probe on ground and touch the other to each wire at the terminal block I get continuity. | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | Ben - if you're checking that continuity with the bulb in place, you're measuring thru the bulb, if you had no continuity that'd mean that element was burned out
Bill | | | | | Joined: Oct 2010 Posts: 1,232 'Bolter | | 'Bolter Joined: Oct 2010 Posts: 1,232 | 3B -
Thanks for explaining why the bulb has continuity across all terminals. I shoulda figured that out myself. Guess I'm loosing more grey cells than I thought!
- Lonnie My '54 3104Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post. lonniecook [at] aol [dot] com. I sold my '54 3104 12/12/2017, but I still visit Stovebolt. OLD STUFF ... houses, furniture, cars, wine ... I love it all | | | | | Joined: Nov 2011 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2011 Posts: 103 | Thanks red58
I thought I was going to have to replace the light switch.
Ben | | |
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