Few wires on yamaha gauge not connected ?

[No more boats]

Recent purchase working my way thru what's working and not working

Gauge cluster
Tac gauge working , ( not bright )
Speed gauge blank screen ,
discovered ground wiring ,
cleaned reconnected and see zeros ( not bright )

Noticed a number of wires not connected and questing WHY ?
TWO BLUE - one of of each gauge
goes too 4 prong harness , single end off harness , blue, goes too nothing ?
Color chart indicates back light , can this go into red , yellow , green , that have empty cavities or run directly too hot ? or not necessary ?
ALSO - two remaining wires not connected too anything , white off of speed gauge ,
White with blue stripe ,
thanks

 

[Scott Danforth]

blue is for dash lighting

lighting wiring is usually separate. use google to find your gauge and find the documentation that goes for it.

 

[boscoe99]

Have you any idea as to the model of the motor or the type of gauges that you have?

Might look something like this:

 

[No more boats]

sorry meant too indicate ,
OX 66
250 HP
can the blue go into red cavity that is open , for what ever reason blue is buried in harness with no connector ?
thanks

 

[boscoe99]

Blue is for the lights. Red is battery power. I would not think that you would want the lights to be on all of the time.

Lights are normally turned on by the key being turned on or by a separate light switch, as shown in the diagram.

 

[boscoe99]

Blue direct to yellow if no switch or blue to yellow through an on/off switch.

 

[99yam40]

there is a place that you send the gauges to to have then renewed,
But I cannot think of the name right off

 

[boscoe99]

www.gaugesaver.com

 

[99yam40]

www.gaugesaver.com

thats the place I was thinking of

 

[No more boats]

thanks , appreciate it