Electrical Repair & Electronics Installation for Boats
ASFB Marine handles boat electrical repair that’s done right the first time—from accurate diagnostics to clean re-rigs and professional electronics installs. With 20+ years in business and certification-backed technicians (Mercury, Boston Whaler, Yamaha, Cummins), we troubleshoot, repair, and upgrade electrical systems for fishing boats, pontoons, bowriders, wake/ski boats, and aluminum utility rigs. Call (916) 737-2628 for fastest scheduling. Want the big picture of what we service? See our complete services lineup.
Fast, Accurate Boat Electrical Repair
If your gauges drop out, the bilge pump won’t run, the horn is silent, or your MFD keeps rebooting, the fix starts with methodical testing. We track down shorts, parasitic draws, blown fuses, failed switches/relays, voltage drops, poor grounds, and charging issues. Then we correct the root cause—not just the symptom—so your boat powers up reliably on the water.
Common issues we solve:
- No-crank or intermittent starts
- Batteries draining at rest (parasitic draw)
- Nav/anchor lights not working
- Pumps, blowers, and accessories dead at the helm
- Trim/tilt or gauge failures
- Electronics that shut down under load
Need a deeper battery health check or swap? Pair repairs with our Battery Replacement service.
Electronics Installation and Helm Integration
Get the features you want without the clutter. We handle electronics installation for chartplotters/fishfinders, VHF radios, NMEA 2000 backbones, transducers, GPS antennas, and dash switch panels. We plan mounting, cable runs, and power distribution to minimize interference and keep your helm organized. If needed, we coordinate with you on transducer placement, through‑hulls, and network expansion so future upgrades are simple.
Marine Wiring Upgrades and Clean Re-rigs
Quality wiring prevents headaches. Our marine wiring work uses best-practice layouts with properly sized conductors, clean terminations, tidy harness routing, labeling, and correct fuse/breaker protection. Whether we’re re-powering your dash, separating start/house circuits, or consolidating old add‑ons, the result is a safer, easier-to-service system.
When wiring issues start with engine controls or repower planning, explore compatible power on our Outboard Motors page or review full Engine Installation & Repower options.
Boat Audio Systems and Marine Lighting
From clear cockpit audio to subtle courtesy lights, we install and tune boat audio systems and marine lighting that hold up to spray, UV, and vibration. Typical projects include head units, amps, subs, speaker upgrades, LED courtesy/compartment lighting, underwater/transom lighting, and switch panel additions. We size wiring and breakers correctly, isolate noise, and keep harnesses secure and serviceable.
Battery Systems and Battery Isolator Installation
Running stereos, pumps, and screens off a single battery is asking for a tow. We design dual‑bank and multi‑bank setups with proper overcurrent protection and smart charging so the engine always has starting power. Our battery isolator installation services include dedicated start and house banks, appropriate switching, and charging strategies for your alternator and shore charging routine. We also test charging output and verify that both banks recover as intended.
Our Process: Estimates, Scheduling, Communication
- Call first for best results: (916) 737-2628. A quick conversation helps us capture the right symptoms and plan parts/labor.
- Drop‑off and diagnostics: We verify the complaint, test, and confirm the repair path. If parts are needed, we special‑order as required.
- Clear approval: We provide an estimate before major work. No surprises.
- Quality check and water‑ready handoff: We function‑test repairs and explain any recommended follow‑ups.
Prefer to start online? Use our Service Appointment Request. Note: website forms are manually entered into our system, so calling is still the fastest way to schedule.
FAQs
What electronics can you install?
We install chartplotters/fishfinders, VHF radios, NMEA 2000 backbones, transducers, antennas, and dash switch upgrades. We power and network them cleanly, label circuits, and test everything before handoff.
Do you troubleshoot navigation lights?
Yes. We diagnose switches, bulbs/LEDs, sockets, wiring, fuses, and grounds. We’ll repair or replace components and confirm brightness and compliance before you head out at night.
Can you install marine stereos?
Absolutely. We set up head units, amps, speakers, and subs; size wiring correctly; isolate noise; and verify reliable power so the system performs underway without draining your start battery.
How do I prevent electrical issues?
Keep batteries tested and charged, protect circuits with the right fuses/breakers, avoid DIY wire splices that corrode, and service connections annually. If a battery is weak, start with Battery Replacement.
What brands of electronics do you recommend?
We work with leading marine electronics brands and can special‑order to your preference. Tell us your fishing style, waters, and display needs—we’ll match the right screen size, network, and transducer.