Wiring harness

tsubaki · #1 07-18-2009, 04:34 PM

Looking at a wiring harness on a 2000, 150 horse Johnson Ocean Pro.
Everything is self explanatory and plugs into appropriate devices and locations except these two eyelet sets.

Colors on these animals are purple, black, gray and then purple, black, white/tan.
I'm expecting these to be gauge wires or the like.
What do these go to and which terminals if used, currently I don't have a trim indicator gauge or anything other than the tach.
Looking at the diagrams, white/tan is a trim indicator gauge. And they appear to be insulated on the wire harness drawing as to be unused.

And here is the tach, I expect the two terminals to be just for instrument lighting. There is an appropriate 8 pin plug in the harness for it.

What do the purple, black, gray sets and the purple, black, white/tan sets go to and what terminal designations (if used)?

Skools Out · #2 07-18-2009, 05:44 PM

i'm at the coast so no books here but the blacks are grounds the purple are usually the keyed hott wire for gauges the tan is uaually the warning horn wire color. the gray is your tach wire and the white/tan is the tilt/trim gauge. look in the midsection for the trim sensor.

tsubaki · #3 07-18-2009, 06:25 PM

Thanks Skools.
So as far as the tach I'm using and not planning on having a trim indicator gauge, I can just insulate the 6 eyelets and commence the installation process?

spareparts · #4 07-18-2009, 07:45 PM

I believe the eyelet sets are for use with a standard tach( non johnrude) that doesn't use the plug in, so if wanted to use diferent guages, you could hook them up like a standard tach. Like Skools said, Purple is key on power, black ground, grey is tach signal,etc... Just tape them back if not used.

THEFERMANATOR · #5 07-18-2009, 08:41 PM

Quote:

Originally Posted by spareparts

I believe the eyelet sets are for use with a standard tach( non johnrude) that doesn't use the plug in, so if wanted to use diferent guages, you could hook them up like a standard tach. Like Skools said, Purple is key on power, black ground, grey is tach signal,etc... Just tape them back if not used.

Also many people used the seperate system check guage and a generic tach instead of the all in one system check tach.

Skools Out · #6 07-18-2009, 10:29 PM

or use an older style OMC tach i would use an all in one system check tach and tape the other wires up for later.

tsubaki · #7 07-19-2009, 04:43 AM

Thanks a lot guys!
The books didn't elaborate, and it all was in a box and disconnected.

willy · #8 07-19-2009, 11:19 AM

The Wizard, down at the shore, off the top of his head. Crafty these Carolina boys