Electrical gremlins are the most maddening problems in boating. Gauges that flicker, pumps that quit, batteries that mysteriously die. We provide full boat rewiring and marine electrical repair at your dock across Fort Myers, Cape Coral, Naples, and SWFL, replacing corroded, brittle, guess-who-wired-this circuits with clean, labeled, ABYC-standard marine wiring that stays fixed.
Boat wiring in Southwest Florida fails for predictable reasons. Salt-laden air wicks into untinned copper strands and corrodes them from the inside. The insulation looks fine while the conductor turns to green powder. Automotive-grade wire and crimps, installed by a previous owner or a landside handyman, fail within a couple of seasons. Add decades of accessories spliced in with household wire nuts, and you get the classic SWFL electrical system: a harness that works until it doesn't, failing one mystery circuit at a time.
There are two ways to deal with that boat. Chase each gremlin as it appears, forever. Or rewire properly once. We do both, honestly quoted:
One honest boundary: dock and boat-lift wiring, meaning the shore-side power feeding your lift motors and pedestal, is licensed-electrician work, and we would rather tell you that than pretend. We handle everything on the vessel side of the shore power cord, coordinate cleanly with dock electricians when a project spans both, and can tell you exactly what to ask them for.
complete replacement of DC systems (and AC where fitted) with marine-grade tinned copper, adhesive-lined heat shrink connections, proper overcurrent protection on every circuit, labeled runs, and a wiring diagram you keep. Done to ABYC standards and sized for the loads your boat actually carries
many boats need one system rebuilt, not everything. Helm harnesses, bilge and livewell circuits, navigation and anchor lighting, battery cabling. We rewire what is failing and leave what is sound
systematic fault-finding with proper test equipment. Voltage-drop testing finds the corroded connection that a visual inspection walks right past
battery banks, switches, charging relays and isolators, chargers, and the heavy cabling between them. The foundation everything else depends on
clean, interference-free power for chartplotters, fish finders, VHF, trolling motors, and audio, installed to survive salt exposure rather than just pass the demo
Electrical work is where mobile marine service either proves itself or embarrasses itself. Anyone can splice a wire. Making a 30-year-old boat's electrical system trustworthy again takes system-level thinking, the right materials, and the patience to label everything. Island Marine Repair has been doing exactly that across Fort Myers for 15+ years, led by Cody, our certified marine technician.
Every rewiring job we deliver comes with the thing most boats never had in the first place: documentation. Labeled circuits, a diagram of what goes where, and connections you could inspect five years from now and still be proud of. The goal is not just fixing today's fault. It is making the next fault easy to find, or better, making sure it never develops. More about our approach on our About Us page.
The worst review a marine electrician can earn is "it worked for a month." Ours say the opposite. Problems that had stumped two previous mechanics, found and fixed in a visit. Rewires that turned flaky boats reliable. Electrical work is invisible when done right, which is exactly how our customers describe theirs: they stopped thinking about it.
Full harness replacements on canal cruisers, helm rebuilds after water intrusion, battery system overhauls before hurricane season. Browse documented electrical work below.
Boating in Southwest Florida is a year-round thing. No off-season, no winter layup, no real break. And that means our shop floor and our service…
Southwest Florida boating is incredible—but it also comes with challenges. Saltwater corrosion, shallow sandbars, unexpected mechanical failures, and the difficulty of getting boats to repair…
Some of the most satisfying work we do isn’t dramatic breakdown rescues — it’s the steady, careful maintenance and smart upgrades that keep good boats…
Older canal boats carrying decades of add-on wiring are our most common full-rewire candidates, and Cape Coral has more of them than anywhere in Florida. We rebuild them properly at their lifts, one labeled circuit at a time.
Wiring repair and troubleshooting dispatched across the river weekly, from helm gremlins on Moody River lift boats to complete battery system rebuilds at Marinatown slips. River humidity accelerates every corrosion process, and the routes reflect it.
Electronics-heavy offshore boats get clean, interference-free circuit work at Naples docks and slips, where the electronics package often outvalues the engines and deserves wiring engineered to the same standard.
Battery bank and DC system rebuilds for Charlotte Harbor cruisers preparing for the Loop, the islands or simply a reliable season. Cruising boats live on their electrical systems, and we build them to be lived on.
Island electrical calls, including the post-storm water-intrusion diagnosis and rebuild work that island boats know too well. Salt water finds wiring first, and we find what the salt water found.
Full electrical service to the outer islands, because corroded grounds do not repair themselves just because the drive is long. Test equipment, wire stock and connectors all travel aboard.
From Matlacha to Bokeelia, Pine Island boats get complete wiring service at the dock: hard-used fishing boats with hard-used harnesses, rebuilt to a standard that survives how the island actually boats.
Circuit upgrades and electrical repair for the Estero River and bay-access communities, gate access handled smoothly and every repair documented so the next owner or the next technician inherits clarity.
Marine electrical service along the Imperial River and Bonita's gulf-access canals, built to the same ABYC standard everywhere, with beach-side salt air treated as the permanent adversary it is.
Lemon Bay and the Englewood waterfront are on the route: mobile marine electrical without the trailer ride south, from single-circuit repairs to complete harness rebuilds at your dock.
One properly done job ends the cycle, and it comes with a wiring diagram to prove it.
