Oh yeah I checked your clickie. My browser said there were 989 results for this eBay search. The chances of finding someone on this forum using that EXACT bulb in a fixture EXACTLY like yours, is not exactly good or even reasonable to expect.
LENSES have a tremendous impact on light transmission. How does a person rate or describe a bright pinpoint of light in a large dark lens versus a much larger area of less intense luminosity?
I live in an environment where if the driver behind me does not note the fact that I am doing something like braking or turning, I may die. It ain't funny to have an 18-wheeler with five working brakes on your bumper.
Drivers tend to FOCUS on a particular part of the rear of your rig. Got it? Try and find this "sweet spot". Then add a third brake light there. Brakes only. There are some pretty potent red LED light bars out there that would work fine for the purpose. Then the issue of tail lamp brilliance becomes less critical. Less does not have the same meaning as no.
LED are using the designation of SMD to denote a standarized size LED segment. The more the merrier. But as was pointed out to me on this forum, LED's are ULTRA SENSITIVE about voltage. Low voltage that would merely dim an incandescent bulb will KILL the output of an unregulated LED. So what's the VOLTAGE of your turn signal terminals? Voltage drop through flashers and switches, fuses, wiring and terminals really affect an LED more than an incandescent lamp.
I underwent a vertical learning curve the last 2-months regarding this.
3157 regulated bulbs is an oxymoron.
A 3157 that works great in a Mini Cooper might be a maxi pooper in an RV.
The bulbs I chose cost seventeen dollars for a pair on eBay. Cost is not nearly as important as having a KenWorth shorten my rig by half.
