The mother of all stupid questions! Ignition switch hole? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

paintman · 03-29-2016, 11:02 AM

Hey guys! I got a build going over on the "pre 47" side but it's kind of slow over there. So I figured I would ask here. I am in the process of installing the ignition switch into the dash and I need to drill the hole.

Question is do I need to make the hole with the one side straight to keep the mechanism from spinning in the dash when I key the unit? If so how the hell do I make the hole? If I just drill a regular hole will the tightened nut be enough to keep the mechanism from spinning? I have never seen a drill bit with one flat side.

Heres a pic of the switch I got from American Autowire...........

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03-29-2016, 11:02 AM	#1
paintman Registered User Join Date: Dec 2010 Location: washington NJ Posts: 766	The mother of all stupid questions! Ignition switch hole? Hey guys! I got a build going over on the "pre 47" side but it's kind of slow over there. So I figured I would ask here. I am in the process of installing the ignition switch into the dash and I need to drill the hole. Question is do I need to make the hole with the one side straight to keep the mechanism from spinning in the dash when I key the unit? If so how the hell do I make the hole? If I just drill a regular hole will the tightened nut be enough to keep the mechanism from spinning? I have never seen a drill bit with one flat side. Heres a pic of the switch I got from American Autowire........... [/URL]



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