Honda BF115A, BF130A Outboard Motors Shop Manual., Page 453Get this manual
HONDA BF115ABF130A
METER WIRE CONNECTIONS
Route and connect wire harness properly, as shown in the wiring diagramUse Meter Wire Harness and for metersConnect leads and terminals securelyMake sure terminals are waterproofUse 19-gauge (1.25 mm diameter) wiresConnect the wire harnesses securelyIf terminal is oxidized or corroded, remove the oxidation or corrosion with nonconductive plastic scrub pad or contact cleaner before reconnecting itMake sure all connections are water tight, use Honda Marine Terminal Service Kit PN 07VPZ-001000A
Make sure insulators surround their connectors completely and the ends are not folded upDo not break the wire harness coveringsIf the covering of wire is broken, either repair it with electrician's tape, or replace itAttach unused terminals to the adjacent main harness with piece of vinyl tape so that the terminals don't interfere with the surrounding partsConnect each wire properly, as shown in the wiring diagramAfter each wire and harness is connected, check for proper connections by referring to the wiring diagramConnect the battery and turn the main power on to check for proper operation