LED interior lights

[piper6909]

Originally Posted by Fiddlebog

This is the correct way to do it. LED-circuits and incandescent-circuits are not directly interchangeable, as incandescent-circuits rely on the impedance of the bulb to operate nominally. An LED can be put into an incandescent-circuit in lieu of a standard bulb, but since LED impedance is so little, a drop-resistor is needed. Installing an LED without a drop-resistor will "work" but it will burn that sucker out quick!

I would imagine they'd have drop resistors built into the bulb assembly. You're saying they don't?

[particlewave]

Originally Posted by piper6909

I would imagine they'd have drop resistors built into the bulb assembly. You're saying they don't?

Pre-made LED bulbs will. However, Dwight and I were talking about making our own.

Manufacturers often will use as few LEDs as, possible running at maximum output with minimal resistance. They do this for maximum light output with minimal cost. This means their bulbs won’t last nearly as long as they should.

I use oversized resistors so that the LEDs will last for their rated life.

[rfuerst911sc]

Originally Posted by particlewave

Pre-made LED bulbs will. However, Dwight and I were talking about making our own.

Manufacturers often will use as few LEDs as, possible running at maximum output with minimal resistance. They do this for maximum light output with minimal cost. This means their bulbs won’t last nearly as long as they should.

I use oversized resistors so that the LEDs will last for their rated life.

PW I sent you a PM . Thanks

[besturgeon]

These interior replacement LEDs fit in my 2004 986, but they were a bit tight...longer than the original bulb. These are 44mm, 40mm would be better, but i did not see these available. The 4410-CW8 and 4411-CW8-CB appear to be the exact same bulb (???). Sorry the screen shots are so big...not sure how to edit pictures sizes in this forum.

[piper6909]

Originally Posted by particlewave

Pre-made LED bulbs will. However, Dwight and I were talking about making our own.

Manufacturers often will use as few LEDs as, possible running at maximum output with minimal resistance. They do this for maximum light output with minimal cost. This means their bulbs won’t last nearly as long as they should.

I use oversized resistors so that the LEDs will last for their rated life.

Gotcha. Thanks.