OK, so today after work I decided to put the dash speakers in. It's easy and took all of 15 minutes to do. This is on a 2007 Ram and will be the same process on any of the Gen 3 trucks. It will also be similar on other generation trucks.
A trim stick or soft plastic panel tool
Small ratchet & 9/32nd socket
First, take your trim stick or panel tool and gently pry up under the corner of the defroster panel at the top of the dash:
Continue popping the panel out of the spring clip sockets all the way to the other side of the cab.
Now, take the edge of the panel and pull it towards the back of the cab. There are at least four plastic sockets that the leading edge slips into at the base of the windshield.
And, the panel is out. Set it aside, then look at your speakers.
You may have two or possibly three speakers under the panel. The two outside corner units are 3.5" size speakers. The one in the middle, if you have it (Infinity systems have them for sure) you will also pull it out. I pulled my center speaker some time ago.
Time to pull the speaker. They are held in place with two screws that look a lot like self-tapping drywall screws.
Time for the ratchet and socket. You can also use a very short phillips head screwdriver. Remove the screws and set them aside. You'll need them later to install the new units.
When you have removed the screws, lift the speaker straight up out of the hole. On the back side you'll find the wiring harness and connector attached to the speaker. Push in the little white tab in the connect slot on the speaker and pull the connector out.
Here's the wiring harness and stock connector, ready for the new speaker.
I went with a MOPAR accessory set of Kicker speakers for my upgrade. Any good 3.5" speaker will work unless it has a high cone, which will prevent you from being able to seat the defroster panel back in place unless you modify the speaker mounting bracket in the top of the dash.
These particular speakers have the connector slot on the body so they really are, plug and play.
If you go with a different set of speakers, you'll want to have a soldering iron and some solder available. You'll cut off the stock connectors on the harness, strip some insulation off the wiring and solder the connections.
When installing the speaker, you'll notice a small plastic alignment tab sticking up from the base of the mounting bracket on the dash. The speakers I chose have a small slot in the metal mounting bracket. I aligned the speaker mounting bracket up against this tab, then screwed it back into place.
If you purchase different speakers than I did, it's no big deal if your speaker mounting ring doesn't have the slot. Just dremel off the alignment tab and you are good to go.
Repeat the process on the other side and reinstall your defroster panel. Remember, leading edge goes in first, seat the panel in the slots at the base of the windshield and then gently push the back side down to seat the spring clips in their slots.
A suggestion from what I learned in doing this similar mod on my Chrysler. Don't replace the center speaker. It affects the sound and prevents you from getting true stereo separation and ability to balance the sound from side to side. If you have one there when you start, pull it out, tape up the connector so it doesn't rattle, push the harness down into the speaker cavity and call it good.
And that's how you do a front dash speaker upgrade to a 3rd Generation RAM. Easy, huh?