Cascadia Interior Lights - Std. Bulb to LED Question

I guess there is this issue because dome lights get power from sam cab logic board...

 

On overhead lights polarity is reversed, it's got negative on center and positive on the side. I had the same problem. Got some led light from wall mart and it works. Don't know what model. Some of the cheaper ones only work if polarity is correct.

 

Those lights will work in the sleeper dome lamps.

 

LED = Light Emitting Diode, all diodes are polarity conscience by nature..

... Philip

 

SAM checks bulbs for open circuit and LED is not recognized as bulb)

 

Yup, ran into that issue on the light in the door sill. Even if you get the polarity correct, the SAM Cab will set a fault for low current/open circuit and disable it until it's fixed. LED's pull a lot less current. You'd have to rig up a resistor in parallel so the LED + resistor has the same current as the incandescent bulb. Last I knew, there were no parameters that could be changed to recognize an LED bulb for dome lighting, but there was talk of adding that option in a future firmware update, I don't think it has happened yet.

 

I have 2012 cascadia, and i replaced ALL lights with LED's from walmart. No issues with SAM, everything works. I didn't replaced lights in the lower part of the door or red lights overhead. The cheaper LED's i got from ebay didn't work.

 

http://www.distantxtremes.com/blog/3157-vs-3157ck-what-is-the-difference