Dash Lighting Problem...

[KBertetto]

All right fellas, I got the bulbs in the mail today... anybody have some info for me?

 

[GBergen]

FWIW,

I was having a problem seeing the temp panel at night and needed check the bulbs in there.

Shortly after removing the panel I realized that I had already changed these over to LED!

One was a bad connection to the panel printed circuit board and the other was a bad solder joint on the LED circuit board. (there are resistors on a circuit board in the base of the LED)



This post is to fill in some information if you needed it.

The voltage I measured was 2. 6V at the light connector.

This picture below shows where ground is on the panel: The black dot shows gnd location on the panel so I don't need to find it next time. I also marked the polarized LED base for ground. I had to use an external power supply to check the LED polarization because there are NO MARKINGS on the base that I could see. I presume that two old AA or AAA batteries in series would give you the voltage (approx. 3 V) for a very quick polarity test of your LEDs.

I've noted a "short bulb" because the LED I purchased, would not fit in the hole and needed to be modified. The squarish ends of the LED, would not let the LED go all the way into the socket, so I changed it's profile a little as shown in the picture below.

I bought these LEDs long enough ago that I don't have the part number any longer. But I do remember that they were NOT an exact replacement. The base of the LED needed to be modified to get it to fit... .

This last picture is of the connector. I ohmed out the connection and found that the pin that is indicated, is the supply for the panel lights. Remember, the supply voltage is less than 3 V. I measured 2. 6V.

Welp, I hope this helps someone that needs this information.

Lesson learned, get the right LED bulbs the first time. Now if I can just figure out what the right LEDs are! I've seen reference to B8. 4D from SuperbrightLEDs, But I'm not sure yet.

Best of Luck

 

[AustinRunner]

The B8. 4D bulbs fit but are polarized so you can put them in backwards.

 

[inlinesix3million]

You will need : 11 B8. 5

3 NEO 5 in HVAC

3 NEO 4 in Trip Meter