Insr. Wiring Harness Color Code Help Please

[Sking]

Cleaning up my dash wiring. Need a little help. In the Allison harness to gauges in the dash there are 2 wires I am not sure about? One is brown/blue stripe and the other is purple. What are they for?
thanks.

 

[Patrick Williams]

Check under the Owners Stuff tab, there's a basic Allison wiring section.
Pat Williams
Cedar Rapids, Ia

 

[Sking]

thanks, I'll do that..

 

[XSive]

Harness

Is that the boat wiring harness or the engine and key switch harness. If it is a Mercury key harness the purple is ignition positive (positive with key on) and tan/blue is, I believe the warning horn wire.

 

[Yellowallison]

Yes.........

If it is a Mercury key harness the purple is ignition positive (positive with key on) and tan/blue is, I believe the TEMP warning horn wire.

 

[Sking]

thanks xsive and yellowallison, Yes, this is the harness that runs up to the instruments/gauges. I just removed the oil injection system and up until now the horn did work for the oil injection which to my understanding is 2 short beeps. However, the tan/blue stripe wire was not hooked up to anything. Does this mean horn for temp was not working? Where does the tan/blue stripe wire tie into.
thanks

 

[Yellowallison]

if yu took the oil injection off thats fine..

Turn the key on and ground out the heat sensor on the head.. Make sure itz still activates yur heat horn....

Here a color code that will help you..


Black All Ground
Brown Reference Electrode MerCathode System
Orange Anode Electrode MerCathode System
Lt. Blue/White Stripe Trim UP Switch

Lt. Green/White Stripe Trim DOWN Switch
Brown/White Stripe Trim Sender to Trim Gauge
Purple/White Stripe Trim "Trailer" Switch
Gray Tachometer Signal
Black/Yellow Stripe Shorting or Stop Circuit
Pink Fuel Sender to Gauge
Red Unprotected Wire from Battery
Red/Purple Stripe Protected (Fused) Wire from Battery
Red/Purple Stripe Protected (12 Volt +) to Trim Panel Control
Purple Ignition (Switch) to 12 Volt Positive
Tan Temperature Switch to Warning Horn
Tan Temperature Sender to Temperature Gauge
Tan/Blue Stripe Temperature Switch to Warning Horn
Yellow Starter Solenoid to Starter Motor
Yellow Starter to Regulator (Charging Circuit)
Yellow/Red Stripe Start Switch to Start Solenoid to Neutral Start Switch
Yellow/Black Stripe Choke (Enrichener System)
Green with Color Stripe Switch Box to Coil - Striped and Numbered
White/Black Stripe Bias Circuit (Switch Boxes)

The ABYC Recommended Colors
Color Where Used / Function
Yellow/Red Starting Circuits
Brown/Yellow or Yellow Bilge Blowers
Dark Grey Navigation Lights & Tach Signals
Orange Accessory Feeds
Brown Pumps
Purple Instrument Feeds
Dark Blue Cabin and instrument Lights
Light Blue Oil Pressure
Tan Water Temperature
Pink Fuel Gauge Sender
Hope it helps!

 

[XSive]

Tan/blue wire

http://www.biggerhammer.net/mercury/factory_manuals/Service Manual PDFs/TwoStroke/824052r3/2d.pdf

I'm not sure if the link above will work. But I appears that according to the wiring diagram in section 2d of the 135/150/175/200... 2stroke manual, that the tan blue wire is for the "Visual Warning light and would not be connected unles you had a visual warning light installed. Good idea from yellow allison about grounding the temp sender to check horn. If you have a ProMax or Production oil injected type motor you should get the "beep beep beep" when you turmn the key on. PM me if you need any help. I won't see it until tonight though.

Bill

 

[Sking]

yellowallison and xsive, thanks a bunch for the info..this is an old boat and no telling who or how many people have worked on it. Wiring looked sloppy and I just wanted to clean it up..
thanks again