Four connections wire a whole airplane: the battery plugs into the ESC, the ESC's three wires go to the motor, the ESC's servo lead goes into the throttle channel — where its built-in BEC also powers the receiver, so no second battery — and each servo plugs into its own receiver channel. Battery goes in last, comes out first. The labeled diagram below is the standard setup on every plane I build; print it and keep it on the bench.
A beginner RC plane has four connections: the battery plugs into the ESC, the ESC’s three wires go to the motor (swap any two to reverse it), the ESC’s servo-style lead goes to the receiver’s throttle channel and powers the receiver through its BEC, and each servo plugs into its own receiver channel with the signal wire toward the pins. Nothing else is needed.
This is the standard setup. The Wiring Designer redraws it live for your exact battery, ESC, servo count, and BEC situation — and flags the combinations that fry gear.
On my first-plane build the chain is: a 3S 1300mAh LiPo (XT60) into a 30A ESC, the ESC's three bullet connectors onto a 2212-class ~1400Kv motor swinging a 9×6 prop, and the ESC's servo lead into the receiver's throttle output (channel 3 on my FlySky's AETR order). Full-throttle draw on that combo runs under 20A, so the 30A ESC has real headroom — and a 1300mAh 30C pack can deliver about 39A, so the battery covers it too. The ESC's BEC feeds 5V up that same throttle lead and runs the receiver plus both 9g servos, each plugged into the output my radio assigns to its function. Five parts, four connections, no receiver battery anywhere.
The prop spins the wrong way, so someone flips the battery connector to reverse it. That is the one mistake with no second chance — reversed battery polarity kills an ESC instantly, usually with smoke. Motor direction has nothing to do with the battery: swap any two of the three blue motor wires at the ESC and the motor reverses. That's the entire fix, and it's why those three wires are unlabeled — order doesn't matter until you check thrust direction, prop off, on the bench.
Not sure which plug is on your battery? Identify it by shape and color →
Servos into their assigned outputs → ESC lead into the throttle output → motor wires onto the ESC → transmitter on → battery in last. Then the 30-second radio check from behind the plane: stick back moves the elevator up, stick right raises the right aileron, throttle blows air backward. If any part in the diagram is new to you, RC Electronics Explained covers what each one does in plain English, and RC Plane Connections, Simplified walks the same hookup with the parts in my hands on camera.
Same receiver as the diagram above. Drag each lead onto the function it belongs to — or press Enter on a lead, pick a slot with the arrow keys, and Enter again to place it. On your real radio the slot numbers vary by brand; the functions never do.
Grab a lead — start with any of them. The receiver stays dark until its power arrives.
All four seated — every lead on its function. ✓
Real-bench order, same as above: servos into their assigned outputs → ESC lead into the throttle output → motor wires onto the ESC → transmitter on → battery in last. And the prop stays off until the radio checks are done.
One plug left on the bench: the flight battery. It goes in LAST — connect it now.
Wiring sorted. Sanity-check CG, wing loading, thrust, and flight time before the maiden.
