I Installed 2 Leviton Decora Single Pole dimmers (side by side) in my kitchen for overhead lights. The lights turn ON, but will not dim. I checked the bulbs, and they are "normal"...not non-dimmable. I did, however originally accidentally switched the ground with one of the black wires during the first hook-up (it was painted white), and when I first turned on the switch, one screw of one dimmer touched the other metal part of the other dimmer, and made a big POP, and a spark, and tripped the breaker. After re-configuring the wires correctly, the lights turn ON, but neither will dim. Did I ruin the dimmers? Or could something else be going on here? I correctly wired the dimmers across the room...with success. They work great. What's up with these two?

Your product is not identified by number given.
Leviton posts manuals online by searching Leviton xxxx .pdf.
There is a CPT 602 lighting console
However no result shows online or at Leviton for a 602 dimmer
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Single pole switch?
http://waterheatertimer.org/How-to-wire-switches.html

Add a comment and describe product and application.

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6633-pl is single-pole and 3-way dimmer made for max 600 watt incandescent or halogen load. This dimmer does not work for CFL or inductive loads such as motor.

I have no idea what a 'locator light' is?? Do you mean the LED indicator that shows when power is connected?

Troubleshoot section of manual does not show any solution for LED malfunction.
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Sounds like that dimmer you ruined
You must turn off power when replacing
And test the wires

You posted under Leviton rotary dimmer.
Lutron and Leviton have many 3-way dimmer styles, and both make 3-way rotary dimmers.

I remember years ago replacing 3-way switches with dimmers and having same experience as you. One dimmer has to be ON for the other dimmer to dim.

Later I learned when you replace both 3-way switches with dimmers, you buy a control-and-companion dimmer set. One dimmer is main, and it lets you dim from both locations. The two dimmers communicate with each other electronically. Buy these dimmers at lighting store that specializes in fixtures and dimmers. Ask for most experienced salesperson.

I checked to see if rotary dimmers are made in the companion set. And neither Leviton or Lutron show 3-way companion set rotary dimmers.

1) Leviton spec sheet on rotary 3-way dimmers does not show companion dimmer. This indicates that Leviton rotary dimmers don't have capability of communicating with each other.

2) Lutron has image of 3-way rotary dimmers.
Image shows single rotary dimmer in 3-way & 4-way circuit.
This tells me that Lutron does not have companion dimmer for 3-way rotary dimmer.

One black is will hook up to one of the black wires inside the switch box in the wall and the other will hook to the other black wire in the box, The green will connect to the bare copper wire which is the ground wire.

Disconnect 1 side of light. Wire nut 1 wire from switch to 1 side of wire from light. Wire nut other side from switch to light. You now have a switch inline.

if your trying to dim a florescent fixture you need one for those fixtures

I recently purchased a Leviton Dimmer switch which has a brown lead. This switch is to replace 1 of 2, 3 way switches that control the ceiling light in my kitchen. My problem is the new dimmer switch has 4 leads including a brown one which has me confused. I have installed and replaced numerous dimmer switches without difficulty. Please help.

What sort of light is it , dimmer switches normally only work on Incandescent type lights not flourescent type.

Otherwise it sounds as if the dimmer function is faulty.