Thread: Interior lights replaced with LED's - WOW what a difference

Originally Posted by UCF04GPGTPCompG

I just ordered two of the "194 5-5050 SMD" one for the front and one for the back passenger side lights. I hope these will be much brighter than the OEM incandesents. I asked Sylvania what their 194 Bulbs are and they said 25 lumens. So hopefully that will help you guys notice the difference in lumens between stock 25 Lumens in 194 bulbs vs. the leds.

Has anyone replaced the Trunk Light for their 2004+ GP? I'm wondering what bulb or board should be used and how effective it is.

Well, finally got the bulbs in and replaced the Passenger Side Front/Rear Interior Lights with these bulbs in white. Definatly much brighter than the incandesents. I like them, but I'm kinda glad I have a bit dimmer Red LEDs on the Driver side from a different company, otherwise these would be soo bright that even if it was red, my night vision would still get screwed up. Very nice bulbs though, we shall see how they work over the long run.

Originally Posted by UCF04GPGTPCompG

Well, finally got the bulbs in and replaced the Passenger Side Front/Rear Interior Lights with these bulbs in white. Definatly much brighter than the incandesents. I like them, but I'm kinda glad I have a bit dimmer Red LEDs on the Driver side from a different company, otherwise these would be soo bright that even if it was red, my night vision would still get screwed up. Very nice bulbs though, we shall see how they work over the long run.

I don't see how red lighting will mess up ur night eye adjustment unless your starring directly into the LED. white light is what screws it up.

also the trunk light should should be the same 194. I didn't use boards in my car, just 194's.

Originally Posted by matt5112

Its any light period.

yeah, that is true but I was just saying, the white light is worse.

Originally Posted by offroadfury6

also the trunk light should should be the same 194. I didn't use boards in my car, just 194's.

You got the same model car I do I believe, the trunk light is like a larger incandesent bulb. It does look like the socket is similar to a 194 bulb though. I just wonder how well a 194 LED bulb will work in the hidden bulb window for the trunk.

I tried the 194 5-5050 SMD bulb that i already had for replacing the passenger side interior lights, and tested it on the trunk. Seems to work fine if the key was engaged in the ignition, but with no key in at all, there didn't seem to be enough power running to the bulb, so it didn't light up very much. Oh well, guess i'll just keep it incandesent.

Also, didn't fit for the license plate lights, the bulb is too long for the housing.

So from what I can tell:

2004 Grand Prix
Driver/Passenger Front/Back Interior Lights = 194 5-5050 SMD
Driver/Passenger Footwell Lights = 194 5-5050 SMD or the larger 194 9-5050 SMD
Trunk Light = ?
License Plate Lights = ?
Vanity Mirror Lights = the 31mm LED housing, haven't tested that though
Glove Box Light = 194 5-5050 SMD or maybe the larger 194 9-5050 SMD, didn't test yet

I guess the main concern other than size of the bulbs, is how they handle the electricity. Replacing the bulbs isn't much good if they don't work 100% of the time, or the key has to be in the ignition & turned to 1st click. From what I saw, for the trunk, in some situations, it won't light up to 100% of it's potential, heck, not even 50%. And it would really be a pain to have to wire in resistors to make these things work.