Plcc2 leds are used in the speedometer

 

The OEM bulbs are hard soldered incandescent. They look to be an 18-24 volt bulb as at a full 15 volts charging voltage they are still somewhat dim. That helps prolong the life but they are what they are. They receive ignition voltage so you can't just use an led without a dropping resistor in series. I used some strip LED's I already had laying around with the dropping resistor already installed.



I reshaped it to take up less space and to get all 3 in the place of one bulb which is why it is so bright. They also have an adhesive backing which is great in holding them where you want them until soldered.

 

Plcc2 bulbs lol. I use them all the time in hvacs I make. They are 1.5-3.6 voltage. Depends on the color.

 

And you can use them without resistors.

 

My 2008 Sport had incandescent bulbs, not LED's. I haven't had every year of Cobalt dash apart, just mine.
Below is a pic of the 2 incandescent bulbs (circled) I replaced with 3 LED's
The bulbs received ignition voltage so there is no way a 3v LED would survive.

 

I really like the blue glow it gives off. I'll have my Son help me with this. He likes tinkering with stuff like this!
Interior looks great HGT!!!

 

Yeah, one of my favorite colors. At night I have to dim it all the way.

 

I know the stock bulbs aren't leds. The bulb size is plcc2. In all speedometers. And yes the voltages are 1-3. I use them all the time. I have hundreds of them. I've probably sold over 10 ac controls I convert to leds with the same bulbs. Mine have been working at that voltage with no resistors for over 4 years in my car. I get mine from
https://www.oznium.com/plcc-2

 

Maybe in the HVAC panel but not for the Tach, speedo and fuel. This is from the page you linked to: https://www.oznium.com/plcc-2/questions


"Surface Mount PLCC-2 SMT LEDs
All Customer Questions
PLCC-2 Surface Mount LEDs

Q: Since I can't use a 9 volt battery for testing these before I install, 2 AA batterys would give me 3 volts would that work? - by Ted (Cumming, GA)
A: You most certainly shouldn't to hook these up to 9 volts. That would blow them out...

As you can see on the product page, the maximum voltage is between 1.9 to 3.2 volts depending on the color of the LED".

__________________________________________________ __________________________________________________ ______

This is from a well know dash modifier which means the HVAC voltage is also system voltage.

Hi Richard,
Thank you for contacting us. Can’t speak for the entire dash but the gauge cluster lights and HVAC panel lights are incandescent bulbs. Let me know if you have any questions.

Black Cat Custom Automotive
1-866-943-8641

 

Had a new windshield put in yesterday to go with the $3700.00 worth of PDR work done to fix the hail damage. Insurance companies love PDR... I don't.

 

Damn didn't realize the hail hit Parker too, destroyed things up in Arvada, I have a few little dings thankfully I was in the right area of Golden and missed the nasty baseball hail.

 

It missed Parker, I was heading back from East Denver. What sucks is they could have put on a new hood and painted for less than the PDR work.

 

Damn that sucks

 

I want to supercharge my terrain. my tuner said no way hes tuning a mom wagon lol

 

Pay him extra.

 

So I relocated my ABS module and both PCM and TCM to see how much room I could make. I could now install any CAI I want in fact have a used ZZP in there now. I reinstalled the modules but will need a molded hose to clear the TCM... Yes, this is an auto. I am not impressed with the fit or quality. I honestly would like to see what an OEM box looks like in there.

 

Put the pipe in the stripping solution, bead blasted to give it a finish the PC will adhere to. ZZP PC'd right over the polished finish and was chipping off.





G]

 

You're doing an amazing work with the car man keep it up!

 

Thanks... Next weekend the SC goes on. Then I'll have some nice pics to share.
Everything is in but a handful of bolts for the Snout of the SC.

 

My TMAP wiring diagram.

 

This is pretty sweet man. Looking forward to more updates

 

Plenty of room!

 

I'm glad I started on this a night early as I was hoping to knock this out in a couple evenings.

Beck's thread has you ordering an OEM steel shim intake gasket which will block off the PCV port which I don't want to see the results of. Most engines that have the PCV plugged become oil leakers with serous crankcase pressures. I will be making my own tonight and channeling the intake manifold as Slowbalt suggested.

I had to get numerous bolts that I didn't have, especially the 3 m8X1.25X120mm long Alternator bracket bolts. I am not excited at all about suspending the manifold and supercharger on 6mm intake bolts like the lightweight plastic manifold was so I think I am going to make all the threads 8mm tonight in the head.

Doing a mock up my 3.1 pulley is just hitting the front support so that will need to be altered and the bottom of the manifold where the mount boss is built up is just tapping the block, not letting it sit flush so a little adjusting there. The motor mount was removed so I could install the LSJ brackets and that is all back in place.

The ZZP CAI does fit so moving the ABS was a success.

 

I was on a 2.7 pulley and had to bash in that front metal piece. And for the m6 bolts in the manifold they work fine. I bought shoulder bolts from fastenal and they have been working for me for almost 3 years now. Build is looking good by the way. I just finished mine.

 

Thanks... good to hear I wasn't the only with the pulley hitting. At the least, I think I will make the 2 studs 8mm.