gauge wiring

[ncfyreman]

i just bought a 1995 wellcraft 190 ccf with a 112 spl johnson. The problem is that none of the gauges work except fuel gauge i have 5 in total there is a RPM, Water,Trim and Volt. none of them work where can i find a wireing schematic at ive looked in the owners manual with no luck also im wanting to replace all those wires with new and just need insight on the schematics

 

[Scott Danforth]

standard SAE wiring colors. most boats dont have schematics

check the power (purple wire daisy chained to each gauge) and check the ground (black wire daisy chained to each gauge). the gauges get their power from the ignition switch

the lights are all dark blue

fuel has a pink sender wire
tach has a grey sender wire
oil pressure has a light blue wire
water temp is a tan wire

make sure you use tinned marine grade wire, however I wouldnt spend time re-wiring. I would simply find the loose connection and fix it.

 

[Silvertip]

Chances are there is nothing wrong with the wire. The problem is "loose connections." So tighten connections.

 

[ncfyreman]

thanks guys ill do that my sending unit is bad i found out wire was bad was cheap wire '