This is for the 03 and up classic trucks and some suburbans/Tahoes.
these are pretty simple install instructions. . . I'm trying to make it easy. IF you don't have the tools get creative. This is how I do mine. Everyone has their own way of doing things.
First off - Everything is temperature sensitive. Blue is easy . . .easier to make even/display vs red . . red uses twice as many LEDs. White comes out more like a white with a green tint to it.
I don't like tearing apart stuff that does not need to come out, so if something is not completely torn apart with detailed explanations . . . that's why.
LEDs are parity dependent. Meaning positive has to go with positive, or wire them up in a series. The longer "leg" of the LED is the positive. Here's a simple soldering the resistor to the LED.
Flat vs Dome top LEDs. Flat tops spread the light more evenly. If you have two of the same spec LEDs and the only difference is the tops..... the flat top will have a little more of a lighter color to it. Example: a blue LED will be a royal blue with the dome top, and with a flat top it'll be more of a lighter blue.
Blue & white use a 470 resistor
red uses a 510 resistor.
3-5 watt pencil soldering iron.
several small to large flat head screw drivers
7mm, 5mm sockets
small, needle nose clippers.
needle nose vise grips.
Dremel with part off wheel.
1/8" drill bit
5mm, and 3mm LEDs
take off the dash trim unit you can remove the 4 bolts that are holding the cluster in.
Use the large flat blade screw driver to take off the tabs.
Using a pin, felt tip marker or whatever you've got to mark the needle's location on the outside edge.
Get your skinny flat head, and wiggle/pry off the gauge over lay. Then use a dinner fork to "gently" remove the needles.
Cluster Back lights (cake walk on the easy scale)- Here's what the stock back lights look like. You can either twist them off the board, or use the soldering iron at the corners to remove them from the board. Here's a few pics, follow these or add or place the LEDs to however bright or dark you want the lights.