Lowrance 3500 Wiring Diagram Official

Route the transducer cable away from engine wiring or other electrical lines to prevent signal interference.

Whether you are installing a used unit on a budget boat or reviving a classic for a restoration project, the wiring diagram is your roadmap.

for all splices to prevent "black death" corrosion, especially in saltwater environments. Unused Wires:

You install a 3-amp fuse on the power line. Bypassing this fuse will void your warranty and risks permanent damage to the unit or your boat's electrical system. Troubleshooting Common Issues