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When I took delivery of my 67 in Feb, had no brake lights or turn signals. I figured it had to be the ts switch under the steering hub and a brake light switch. Weird they both died at the same time. I got the new brake light sw put it in place and brake lights are working again. I plugged the new ts switch in under the dash and my turn signals worked normal. Problem solved. BUT WAIT: rear signals all good, brake lights all good. Front ts when left or right is activated, they both flash but the rear flash normally. In the beginning, before I tore the steering hub apart, I turned on my parking lights and the drivers side front barely lite the wire element inside the bulb while the passenger side was bright as normal. Switched bulbs and drivers side was still dim. ideas or suggestions greatly appreciated.
56 year old components, 56 year old wires, 56 years of corrosion on every ground, and 56 years of being chaffed, rattled, heat and cold cycles is most likely what is happening. Every bit of all all of it could be causing the issue, & you'll be narrowing it down, one wire at a time to fix it. Welcome to classic car ownership. A lot of times it's just easier & good piece of mind to replace the entire harness with a new one.
You probably have a bad ground. Remove both park/signal light lenses and using a good test light, which is grounded directly to the negative side of the battery, probe the brass part of the bulb. If the test light glows you have a bad ground on that socket. This is not a "Corvette" socket, only used as an illustration.
Or as the second pic shows, I removed the ground wire on my 61's housing to illustrate how the test light glows with no ground to the housing.
Make sure the park lights are on when doing the tests.
Good reply, I will preform that test. Do front parking/ts bulbs have double elements?
Yes, also when you have the lenses off check to make sure it is a double contact bulb with offset pins. Also make sure the pins are aligned with the short and long slots in the socket.
I have seen a signal contact bulb forced in and the index pin bulb put in 180^, I also seen, in rare occasions, when a non-indexed pin double contact bulb put in.
Head scratcher
