Upgrading 1965 Barracuda brake lights

Thanks for the compliment Dan. Much of what I do is flying parts, so redundancy is just part of the job.

I think anyone who's been working on cars for any length of time knows what it feels like to get frustrated enough to send parts flying across the garage or across the street. That's what you meant, right?

The ratios between modes are 8:1 according to my Gossen Luna-Pro.

Definitely sufficient and then some!

Because of the additional emitter area the assembly appears to explode when going from tail to stop.

Yup. As mentioned in the other ('66 Dart) thread, a change in not just intensity but shape of the lit area accompanying a function change (tail/stop) helps a lot.

I am not sure of which reflective film that is. I have a sign shop next door, and I picked that out of the scrap bin. I am open to suggestions if there is something better

Hard to find on the consumer market, but fluorescent red retroreflective sheeting is the stuff to seek. Have you noticed how yellow highway signs have gotten brighter over the last few years? I'm not talking about the fluorescent yellow-green (or "safety yellow") ones you see in pedestrian zones but regular yellow guide signs on the highways and byways. It's because regular yellow is being replaced by fluorescent yellow. If you happen to see a regular yellow and a fluorescent yellow highway sign side by side, the regular yellow one looks mustard-brown by comparison. The fluoro red stuff isn't applied to highway signs (yet?), but it is out there. I've seen it on new luggage tugs at airports.

Fluoro or no, the Type IX or Type XI sheeting is the highest performing stuff. You might not like its "matrix of square prisms" appearance, though. I'm not sure exactly what sheeting Petersen uses for these, but it looks nice and works well.

The Yellow stuff is brighter, but ugly in sunlight.

Rear reflex must be red. Front not required, but white if present. Front side must be amber, rear side must be red. (side marker reflex and/or lights required from 1968 to 1970, side marker reflex and lights required from 1970 on).

Lenses are cast from a slow cure epoxy.

Interesting. How's its heat resistance and UV stability? Commercially produced lenses are acrylic or polycarbonate.

I considered going amber turn signals at one point - may still try it.

Smart idea. See here and here.

I have been toying with making the license plate light double in intensity when the brake lights come on.

Probably not a wise idea. The primary main objective is immediately and unambiguously clear lights. Don't throw unexpected nonstandard state changes at other drivers; it never improves their reaction speed or accuracy.

Or should I just make it bright as hell all the time?

Most queries I get about license plate lighting go the other way: people want to make them as dim as possible! :shock: