It would be cool if you rigged that up and the lights were hidden away. Or if they could somehow be merged into the big orange blinker on the side of the fender. Which I may shrink someday, by 50%. Might look better. Have to fill in screw holes though.
Anyway on modern cars they have the cornering lights built into the headlamps. The lenses move like eyes and point towards the direction of the turn. When driving granny's ride I did notice that this was kind of helpful. But I'm not sure how much. I drove all my life without them and never seemed to notice any problems from not having them.
You kind of do the estimation in your head before you turn. You can see what the turn is going to look like while your headlights are still shining on it. And it's all taken care of after that point, you've already seen everything.
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heres my 1999 park avenues headlamp with the cornering light using an amber bulb. part of it was because personally I think it looked nicer, legally nothing is stopping me(Looked into it) and the amber is a little more inviting than a bright white LED to others, while still lighting the turn decently. The lower two bulbs (a 194 to back, a 3157 or whatever to the front) which does "Switch back" like the sidemarker on the square relative to the turn, just mine wrap around bumper so they are "combined"
If you do shrink the lens by 50% I think youd need to make the bulb behind what remains a bright 194 sized one to technically not violate lighting equipment laws, but no one would ever , i hope, pull you over and cite
CFR 49 Volume 5 Section 571 Standard 108 LOL
I would think it would be easiest to incorporate the cornering lamp at the bottom of the forward part of the fender on a 1973-1980 so straight below the turn signal but in that area, or in the bumper or immediately to the edges where the bumper stops, or a custom bracket existing somewhere in that area of fender,bumper, core support