2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI)
Android Auto, CarPlay & Streaming Apps for 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI)
| Factory code | FLHRSI |
|---|---|
| Engine | Twin Cam 88 |
| Factory head unit | No factory options — HogPlay Screen recommended |
| Factory USB location | None |
The 2004 Road King Custom (FLHRS/FLHRSI) stripped the valanced fenders and touring bulk off the standard Road King, leaving a leaner, blacked-out silhouette riding on spoked wheels — and this particular rig is set up to pull a sidecar, adding stability and cargo room for real-world touring. Power comes from the Twin Cam 88, Harley's 88-cubic-inch big twin that carried the touring line through the early 2000s. No factory radio or screen ever came on this bike, so the fix is the 7-inch HogPlay Media Screen mounted right on the bars.
No Factory Radio — Add Your Own Screen
The 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI) left the factory with no radio, stereo or touchscreen to bypass — so instead of a workaround, you add your own. A standalone HogPlay Media Screen is a 7-inch head unit with wireless Apple CarPlay and Android Auto, live Maps & Waze navigation, calls and streaming built in — we recommend the Screen 7 Pro with its onboard DVR drive-cam. Most riders settle for Bluetooth-only kits that leave the phone in your pocket with no turn-by-turn directions; this puts it all on the bars instead. It mounts to the handlebars with basic power and ground and comes off just as easily, so reach out to the HogPlay team if you'd like a hand. (Media Box support on Screens is in development.)
HogPlay CarPlay screens that fit 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI)
We also stock universal parts that fit the 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI) and most other motorcycles — standalone CarPlay screens and universal USB power.
Universal parts that fit 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI) and most other motorcycles
✓ Universal fitHogPlay USB Media Box Power Boost Cable (USB C)✓ Universal fitHogPlay USB Media Box Power Boost Cable (USB A)
✓ Universal fitHogPlay USB Charging Ports - USB-A & USB-C - Universal for MotorcyclesAbout the 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI)
Custom-trimmed but sidecar-capable, the 2004 FLHRS/I pairs Road King touring DNA with a stripped, low-key stance — shorter windshield, minimal chrome, and the stability a third wheel brings for long-haul riding two-up or loaded with gear. It's a comfortable, torquey ride off the Twin Cam 88, but like every Road King Custom of this era, it left the factory with no navigation, no Bluetooth, and no way to run a phone.
The HogPlay Media Screen solves that without touching the stock dash. It clamps to the handlebar, runs on a simple power and ground tap into the bike's existing wiring, and mounts reversibly — face-up or face-down — so it works whether you're solo or running the sidecar rig. Once it's wired in, it's wireless Apple CarPlay and Android Auto through a built-in speaker, right where your eyes already are.
Every 2004 FLHRS/I Sidecar Road King Custom deserves modern connectivity, and the HogPlay Media Screen delivers it without rewiring the bike. Dual Bluetooth means your phone pairs for wireless CarPlay or Android Auto on one channel while a second channel feeds an auxiliary amp, handlebar speakers, or a portable Bluetooth speaker for real volume. A small built-in speaker still handles turn-by-turn prompts and light audio on its own. Sealed, waterproof, and built rugged, it shrugs off rain, road grime, and sidecar miles alike.
Android Auto on the 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI): HogPlay makes the 2004 Harley-Davidson Road King Custom with Sidecar (FLHRSI) run wireless Android Auto and Apple CarPlay — compare every Android Auto for Harley-Davidson & Indian motorcycles option, then confirm your exact fit with What Fits.
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