FanTastic 7350
See the Dometic FanTastic Vent 7350 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.
1 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.
Manual minimum 16 AWG stranded copper is rounded up to 1.5 mm² for this short example. Black is positive, white is DC return. Retain the 4 A SLOW-BLOW appliance fuse; its rating is not a source-cable fuse prescription. Manufacturer installation manual
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.
Manual minimum 16 AWG stranded copper is rounded up to 1.5 mm² for this short example. Black is positive, white is DC return. Retain the 4 A SLOW-BLOW appliance fuse; its rating is not a source-cable fuse prescription. Manufacturer installation manual
Edit this wiring exampleInstallation notes
Guidance for this model, with sources linked beside the relevant advice.
Verified against the manufacturer's documentation (rev. FanTastic Vent installation and operating manual 8613-01, revision D, October 2020), checked 2026-10-01. Manufacturer documentation →
This entry is the Dometic FanTastic Vent 7350 with remote control and rain sensing. The specification table, page 8, lists 36 W and current below 3 A. The catalog uses 3 A as that published upper bound, not the draw at every selected speed. Do not substitute the wiring of a manually controlled roof vent.
The electrical instructions, pages 10–11, require at least 16 AWG stranded copper and show black to positive, white to negative. White is the DC return here; it is not a mains neutral. The two catalog terminals represent those supply connections. Keep the return conductor with its positive feed when routing through the roof structure, and protect both against sharp edges.
The maintenance instructions, page 24, specify a 4 A slow-blow glass appliance fuse. Retain that exact type when replacing it. This fuse is separate from the protection at the source of an extended supply cable. The 4 A value is not an independently verified connector rating. A metric 1.5 mm² conductor is a conservative practical choice above the manual's 16 AWG minimum for the short page example; longer runs still need a voltage-drop check.
The 7350 remote sets fan operation, while the rain sensor can close the lid. Read the remote-control sequence on pages 18–19 before enabling rain override: that override changes automatic lid behaviour. Do not assume the sensor replaces checking that the lid is closed and the roof is ready for travel.
Test the fan over its available speeds, lid movement and the intended remote settings. Check the roof seal and the supply voltage under load. Isolate power before accessing the blade or changing the fuse. Clean the screen, blade and rain sensor using the manual's methods, and investigate repeated fuse failures rather than increasing the fuse rating.
Build it out
Add FanTastic 7350 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.
Black +12 V
pos
positive · input
White DC −
neg
negative · input
A dash means a current rating is not specified here.
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.