Bennett Marine
Review how the Bennett BOLT BRC4000 Trim Tab Control connects, how it operates and which installation requirements apply to this model.
Open this example as a new project. Use your own parts and cable lengths to make the plan yours.
Reversing actuator harnesses and assembly-dependent unpublished current require a specific trim-tab design; the 20 A fuse is not load demand.
Reversing actuator harnesses and assembly-dependent unpublished current require a specific trim-tab design; the 20 A fuse is not load demand.
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.
This supply example retains the manufacturer's 20 A fuse. Follow the complete installation notes for connector polarity, mounting, controls and commissioning; verify the actual cable route and equipment revision. Manufacturer installation manual
Edit this connection overviewInstallation notes
Guidance for this model, with sources linked beside the relevant advice.
Verified against the manufacturer's documentation (rev. BOLT Installation & User’s Guide, 40-page edition), checked 2026-10-01. Manufacturer documentation →
BRC4000 is the basic rocker control for Bennett BOLT electric trim tabs. This record covers a 12 V system with one actuator per tab and the compatible wiring harnesses. It does not represent hydraulic Bennett pumps, a dual-actuator arrangement, the separate BCI indication controller or an AutoTrim Pro installation. The manual’s 20 A requirement describes the protected supply capability, not a measured continuously operating load, so no ampDraw is invented.
Connect orange to 12 V positive through the specified 20 A fuse and black to the negative return. Join the labeled port and starboard harnesses as shown: red marking identifies port and green marking starboard. The motor drive changes direction, so neither conductor of an actuator pair can be modeled as a permanently positive or negative distribution output. The catalog therefore keeps the two actuator harnesses as connector markers without fabricated DC continuity.
Use the BRC4000 mounting template and the specified 2.5-inch hole, leaving room behind the panel for the harness. Support the cable so it cannot pull on the control. Follow the BOLT actuator and tab placement, fastener and sealing instructions for the actual hull rather than choosing position from an electrical diagram. Check clear travel and sound mounting; do not use the tabs as a lifting or boarding support.
With the boat secured and people clear, operate each rocker direction briefly while an observer checks the actual tab response against the manual’s bow-control diagram. Confirm both actuators run and stop and that port/starboard harnesses are not crossed. Inspect supply voltage during movement if response is slow or intermittent. On the water, use small trim adjustments and observe the boat response. This page stays an overview because reversing actuator wiring and actual current must be verified for the installed tab system.
Bennett Marine installation manual, BOLT Installation & User’s Guide, 40-page edition; quick-start supply requirements and BRC4000 section; printed p. 24 single-actuator wiring diagram visually verified. The original PDF is retained in the marine source ledger. The drawing represents the identified electrical interfaces; it does not simulate the equipment’s mechanical performance, radio signals or fluid system. Unpublished connector ampacity and startup current remain unspecified.
Build it out
Add BRC4000 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.
Orange +
pos
positive · input
Black −
neg
negative · input
Port harness — red
port-harness
signal · bidi
Starboard harness — green
starboard-harness
signal · bidi
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.