My original van conversion lighting came with T10 wedge base bulbs. Many incandescent bulbs could be used, the brightest was a 921 or a 914 bulb. 194 and 168 bulbs are smaller and dimmer.
I don't use any incandescent lighting anymore, except in my Dash cluster so the original dimming function still works properly.
Right now my favorite light sources are homemade lights. I took 99 cent store goose neck lights, fed slightly thicker wire through their stems, and installed some T20 base LED bulbs which claim to use Cree Emitters, could be counterfeit.
I love directing the light where wanted and needed, and not being able to see the bulb itself, and my lights allow me to aim them where ever and not have to see a retina burning led if I look toward the light.
I've no experience with the following linked product, but it is similar to what I employ:
http://www.amazon.com/12-24V-Mounte...1423974643&sr=8-40&keywords=12v+LED+spotlight
There exists a LED bulb for every 12v incandescent housing used in any vehicle. They are finally good and bright, and not too blue.
Here is a very overpriced LED light i bought in 2007. Much too dim. I later added a PWM dimmer to it as I only use it as a reading light, and the dimmer the light, the sooner sleep can overtake me.
I pulled the guts out of this Module for the PWM dimmer:
http://www.amazon.com/JACKYLED-Dimm...qid=1428470304&sr=8-2&keywords=pwm+LED+dimmer
Some regulated LEDS will not dim via a pwm dimmer. Usually these are LEDs with a wide voltage range, like 12 to 24v and can cause radio/ OTA Tv interference.
This is my 99 cent store battery powered light retrofitted with a t20 Cree 12v LED. It is quite bright:
Not so pretty, but very functional.
Draws 0.12amps at 12.8V.
Proving durable too, running 6 to 8 hours a night for the last year and a half.
My ceiling is white so Aiming this light at it gives a nice ambient light. Aimed down at my table and it is an excellent task light.
Here was the original T20 bulb and 99 cent store LEDs
My original ' salt and pepper shaker' light fixtures are still employed in areas. 2 of them have Blue LEDs in them, two others up front have some very bright Cree based white T10 bulbs in them.
Here is one of my homemade Speakers in the back corner of my van, suspended on Bungees. the colors of the lights are richer in real life.
I've got 12' of red rope lighting spread around my interior too, not very efficient LED lighting but when the mood fits, night vision is not compromised.
I employ some of these too:
http://www.amazon.com/Universal-Bum...428471499&sr=8-14&keywords=LED+running+lights
Those get pretty hot and are obnoxiously bright, and the quality is hardly astounding, neither is their efficiency.
Dozens and Dozens of options for 12v lighting out there, and more everyday. I couldn't find what I wanted so i made it. Later on I found similar products to what I wanted.
