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2005 Johnson Ocean Pro 115 two stroke wiring

D

david_c

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"Hello,
I was wondering if an

"Hello,
I was wondering if anyone could help me out on this. I am going to be adding several gauges to my boat and I need some help. I think I remember the tach source wire is gray and ignition is purple. Correct? I am installing Speedometer, Tachometer, Water Pressure, Volt gauge and Trim gauge. I think I am pretty sure on everything except the trim gauge. I have never installed a trim gauge on any of my boats before. This boat has a jack plate and I figured a trim gauge might be useful. The boat already has the status (four led) gauge in the dash and a fuel guage. That is all the gauges the boat came with.
My question is what color wires do I need to look for in the wiring harness for the trim gauge? Am I correct on the Gray wire for tach and the purple for ignition? Any information on installing any of the other listed gauges?
Thanks in advance for the help,
David"
 
"I found two sets of wires und

"I found two sets of wires under the dash that were taped up. One group of three are not connected to anything and the colors are gray (tach ??), purple, black. The second group of three are purple, black, and white with a dark tan or brown strip. Are these the wires for gauges?"
 
"Purple=12v --- Gray=Tach sens

"Purple=12v --- Gray=Tach sensor lead --- Black=ground --- White/Brown=PTT Gauge sensor lead.

I'd suspect that the 1st group you mention above is for the tachometer (Gray, Black, Purple) and that the 2nd group pertains to the PTT gauge but trace that 2nd group back to the PTT sender which will be located just inside the port transom bracket just to be sure."
 
"Joe,
Thank you very much for

"Joe,
Thank you very much for your reply and help. I will trace the wires and see where they go to. Should I use the individual grounds for the each gauge or should I tie them all together and ground them at the fuse / ground panel under the dash. This is on a center console boat so everything is pretty easy to access.
Thanks again for the help, it is very much appreciated.
David"
 
"The grounds? As long as they

"The grounds? As long as they are true grounds which lead directly to the negative battery terminal, it doesn't matter."
 
"Joe,
I was referring to the

"Joe,
I was referring to the black wires in the two groups of three wires that are under the dash.
Thanks again for your help."
 
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