Load
See the Fiamma Turbo-Vent connection points and wiring example. Open the diagram in Crimp to add your equipment and plan the cables between them.
Open this example as a new project. Use your own parts and cable lengths to make the plan yours.
Use the diagram as a starting point for your installation. Replace the example equipment and cable lengths with your own, and check the connections against your exact model's instructions.
3 m one way
12 V system
Sized against ABYC E-11. The design current is the part's continuous draw. The length is one way; voltage drop includes an equal-length return.
The editable example uses 3.048 m (10 ft) runs unless a shorter run is stated. Metric overviews round these to 3 m. Adapt the parts and lengths to your installation before choosing cable and protection.
Wiring diagram
Open this example in Crimp to use your own parts and cable lengths. Review the assumptions and installation notes as you adapt the circuit.
Installation notes
Guidance for this model, with sources linked beside the relevant advice.
Verified against the manufacturer's documentation (rev. E0_IS_98690-580_revAC — Turbo-Vent / Turbo-Vent P3), checked 2026-10-01. Manufacturer documentation →
This entry covers the standard Turbo-Vent with Polar Control, not a Turbo-Vent Premium. The manufacturer manual, pages 4–5, gives 12 V nominal, 8–16 V operating range, 0.3–3 A ±10% and 36 W. The catalog's 3 A load is the published upper nominal operating current; its 3.3 A terminal envelope includes the stated tolerance. Actual energy use depends on speed and thermostat cycling.
Connect red to positive and black to return using the correct wiring arrangement for the supplied version. The connection drawings, pages 10–11, distinguish the controls. The technical data identifies 1 mm² supplied cable and an internal 5 A self-resetting fuse. That internal device is not a specification for the vehicle's external branch fuse. Protect the installation's supply cable according to its route and rating; do not infer operating current from the 5 A protection value.
The installation instructions, page 6 onward, show a 39 cm square opening and a roof thickness of 30–85 mm. Check those dimensions against the supplied frame and roof structure before cutting. Orient the hinges toward the front of the vehicle, use the specified sealing material and fastening pattern, and keep wiring out of moving or pinched areas. Check the sealed roof joint after installation.
Use the direction and speed controls for intake or extraction, with Polar Control setting the temperature response. Stop the fan before reaching near the blades. The use and maintenance guidance, page 15, requires the rooflight to be closed before travel and prohibits opening it while moving. Inspect the cover, seals and fixings regularly; use mild cleaning products rather than abrasive or aggressive solvents. A fan that slows or stops should be checked for obstruction, supply voltage and control setting before assuming motor failure.
Build it out
Add Turbo-Vent to your diagram, then connect your batteries, chargers and loads. Crimp calculates cable sizes and checks the connections as you draw.
Every cable you draw there is sized against ABYC E-11, from the same tables as the reference on this page.
Technical reference
Check the model, ratings and connection points against your own unit before choosing installation hardware.
Check stud sizes, fuse type, run length and how warm the space gets against the gear you actually have before you order.
Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.
+
pos
positive · input
−
neg
negative · input
Method & provenance
Manufacturer specifications describe the equipment. Crimp calculates cable results from the circuit and assumptions you enter.
From the maker
Manufacturer, model, ratings and which terminal does what come from the catalog. A newer revision, or the nameplate on the unit in your hand, can say something different — when it does, the nameplate wins.
ABYC E-11
Sized against ABYC E-11. Boats built to UK or EU rules answer to ISO 13297 — check these figures against it before you build. The run length and the current above are what drive the result. Crimp doesn't know how warm your space gets; draw the cable inside an engine-bay zone on the canvas and it sizes for the heat.
Next step
Open this example as a new project. Add your equipment and cable lengths, then review the sizing and checks for your setup.