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Jul 21st, 2025 | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | I'm in the process of finishing my wiring installation.
My mid 80s Cadillac tilt/tele column has a safety switch clamped on.
I realise it's simply a matter of splicing the wire to the starter,but can anyone tell me which connections on the switch to use?
There's more than one per side.
I've tried working it out with a test lamp but no joy.
Either that or I have a bum switch.
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Oct 2007 Posts: 63 Wrench Fetcher | | Wrench Fetcher Joined: Oct 2007 Posts: 63 | Around that era they used switches at the base of the column for a neutral switch and the other pair were for reverse . check with a meter ot lamp with the shift in park and neutral for continuity and in reverse for the same , failing that in the bin with it. You may also need to check that the switch is actually being moved by the gear selector arm
regards
andrew | | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | Thanks Andrew,I never considered that each side may be for different functions.DUH!
The column was a swap-meet special so I didn't remove it from the original donor.
I assumed the two sides were for the feed and ground of the circuits.
I'll get back into the garage tonight and check.
The switch is definately being moved OK by the selector and I know there is a small amount of adjustment by rotating the switch on the column.
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Feb 2004 Posts: 28,674 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 28,674 | The "neutral" switch contacts will have continuity in both the Park and Neutral shift lever position. This allows the voltage from the start position of the ignition switch to be routed through the neutral switch to prevent starting the engine with the transmission in gear. The other set of contacts will only have continuity in Reverse, allowing a backup light to be switched on. Most neutral switches have a slotted base to allow minor adjustment of position to assure the contacts make at the proper shifter position.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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| | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | I'm not bothered about the reverse light Jerry, I just want a safe truck to drive.
I've heard horror storys about guys who didn't install a switch.
A guy down south 'rearranged' the back of a guys Deuce at a show last year!!
Still didn't manage out to the garage last night, hopefully tonight...
Thanks.
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
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