71 Fiber Optic lense position

[Kenneth T.]

New question on an old topic. I have a 71 and I am changing the fiber optic lenses in the front parking/signal lights.
My lights have the lenses just poking out of the grommet. I have seen others where the lenses are pushed into the light cavity about a half inch or so, closer to the bulb...presumably to get better illumination.

I have a two part question. What is the correct location of the lenses, and is placing them further into the cavity and closer to the bulb increasing the brightness in the interior? With the headlights there is a seal placed between the socket and the nipple of the lamp to concentrate the light on the fiber optic. So, in this case, does pushing the lenses further in allow the light to escape on the sides of the lenses or does it help by being closer to the bulb? I obviously have extra time on my hands, but enjoy my time in the garage.

Thanks Ken

[Terry M.]

Re: 71 Fiber Optic lense position

New question on an old topic. I have a 71 and I am changing the fiber optic lenses in the front parking/signal lights.
My lights have the lenses just poking out of the grommet. I have seen others where the lenses are pushed into the light cavity about a half inch or so, closer to the bulb...presumably to get better illumination.

I have a two part question. What is the correct location of the lenses, and is placing them further into the cavity and closer to the bulb increasing the brightness in the interior? With the headlights there is a seal placed between the socket and the nipple of the lamp to concentrate the light on the fiber optic. So, in this case, does pushing the lenses further in allow the light to escape on the sides of the lenses or does it help by being closer to the bulb? I obviously have extra time on my hands, but enjoy my time in the garage.

Thanks Ken

I have no answer to the parking/turn signal question, but the seal at the headlamps should concentrate the light to the fiber and more importantly keep the end of the fibers clean longer. Be sure that seal is in place. It is easily lost. My experience is that dirt on the end of the fiber optic cable is most deleterious. At work we use the equivalent of a Q-Tip to clean the end of the fibers.

[Bob I.]

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[Kenneth T.]

Re: 71 Fiber Optic lense position

Bob,
Thank you for the reply and the photo, Terry you too of course. I did not reply to clog up the board.
Bob, that is exactly how my lenses were placed, so now I will look at the alignment and may go long on one and short and compare. That picture says it all though.
Ken