Clear Your Ignition Switch with this Diamond Audio Street Glide Head Unit Installation Video.

Stay tuned while we install the Diamond Audio SG head unit for 1998-2013 Harley-Davidson motorcycles, as well as the MP 652 speakers.

Upgrading Your Stock Radio

We all know how bad the stock radio is in Harley-Davidson motorcycles from 1998 to 2013, with the different models that were released. Today, we’re bringing your bike up to today’s technology with the Diamond Audio SG radio, featuring a full 7-inch touchscreen, hand control functionality, Apple CarPlay, and Android Auto.

Removing the Stock Radio

First, we're going to disconnect the stock radio connections by removing the 23-pin connector and the antenna wire.

Next, using a 3/16 ball socket Allen, we’ll remove the side bolts for the factory radio. We’ll repeat the same process on the other side.

Removing the Ignition Switch

The next step is to remove the ignition switch from the motorcycle. To do this:

1. Turn the switch to the left and insert the key while it's in the unlocked position.
2. There’s a small tab on the bottom—push it up, then rotate the ignition switch counterclockwise to the 9:00 position.
3. At this point, the radio and spring will come right off.
4. Be careful not to misalign the ignition switch area. We carry an alignment tool on our website, which makes it easy to realign if needed.

Here’s a close-up of the tab you’ll need to press while turning the key. Since it's hard to get a good camera angle inside the bike, I wanted to show it to you separately.

Now, simply slide the stock radio out.

Prepping for the New Radio

Before installing the new radio, we need to disconnect the indicator light connector. This connector won’t be needed since the new radio already has built-in indicators for turn signals, high beams, neutral light, and oil pressure light.

Unlike the stock radio, the Diamond Audio SG radio is installed from the rear side. Before installing, make sure all your cables are unobstructed. You might need to spread the brackets slightly to allow the radio to fit.

Now, I’ll insert the four mounting bolts—but I won’t fully tighten them yet. We’ll need to pry the radio forward to ensure there’s enough clearance for the ignition switch.

Gently adjust the radio's position so that everything lines up properly, then carefully tighten the mounting bolts. Be sure not to cross-thread them.

To make sure the radio clears the ignition switch, place a screwdriver on the radio fin and pull it forward—this ensures the necessary clearance for installation. Repeat this on both sides, then fully tighten the 3/16 radio mounting bolts.

Realigning the Ignition Switch (If Needed)

If your ignition switch gets out of alignment, we carry an ignition switch alignment tool that makes it easy to reset. Simply drop the tool into place, ensuring the top and bottom keys of the ignition switch are properly aligned.

Now, reinstall the ignition switch in the same orientation it came out, turn it, and it will lock into place.

On some bikes, you may notice the radio sits very close to the ignition switch. This can happen if:

• The fairing has been removed before
• The bike was assembled with loose tolerances at the factory

To fix this, we’ll need to realign the fairing.

1. Loosen the four bolts holding the fairing.
2. Gently pull the fairing forward and re-tighten the bolts.
3. Now, we have proper clearance—about 3/16 of an inch—between the ignition switch and the radio face.

Making the Electrical Connections

Now, let’s connect everything inside the fairing.

1. Connect the indicator lights.
2. Plug in the 23-pin harness—this radio does not require a T-harness adapter like others.
3. Connect the antenna.
4. Install the USB cable—route it near the handlebars inside the fairing to retain the 12V accessory plug.
5. Secure the wiring with zip ties and run the microphone cable for hands-free calling.
6. Run the 3.5mm AUX input cable.

To prevent sharp edges on zip ties, I prefer to use flush-cut zip tie cutters—this helps avoid accidental cuts on your hands later.

Upgrading to 6.5-inch Speakers

Now, we’re replacing the stock 5.25-inch speakers with larger 6.5-inch Diamond Audio MP 652 speakers.

1. Disconnect the stock speakers.
2. Using a Torx T25 bit, remove the factory speakers.
3. Install the 5.25-inch to 6.5-inch speaker adapter brackets—these are available at Lifestyle Cycles.
4. Secure the adapter brackets with six screws.
5. Attach the speaker grills—unfortunately, we didn’t have the Diamond Audio grills at the time of filming, so we used an alternative.

Installing the New Speakers

1. Remove the green/black (left negative) and green/white (right negative) speaker wires from the stock setup.
2. Strip the wire ends—you can also tin them with solder for added durability.
3. Connect the high-pass filter crossover to the existing wires on the bike.
4. Before mounting the speaker, connect the wires:
   • Red to red
   • Black to black
5. Secure the speaker mounting bracket and tighten the screws.

Adjusting for Fitment (If Needed)

On some models, you may need to trim a small reinforcement tab inside the fairing to fit the magnet of the speaker. Some fairings will fit without modifications, but if you have clearance issues, just trim about 1/4 inch, and everything will fit perfectly.

Final Thoughts

That’s all there is to installing a Diamond Audio SG radio and MP 652 speakers on a 1996-2013 Harley-Davidson Batwing fairing.

If you have any questions or need help, feel free to reach out to me or anyone in the technical department at Lifestyle Cycles Online Mega Store.