Wiring Diagram HELP !!!

[dbug10]

I am in dire need of a wiring diagram for a 2.5 260 EFI Mercury I am swaping over my 280 to 260 electric and have a few wires I cant seem to figure out where they go so if anyone has one or knows where I might be able to get one any info would be oh so greatly appreciated thanks James

[nelson edens]

http://www.mercuryracing.com/_media/...1981%20198.pdf

go to page 61

[nelson edens]

What are the general wiring colors used on Mercury Racing outboard engines?

Mercury Racing Standard Outboard Wiring Color Code
Color	Where Used / Function
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

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[dbug10]

Nelson I have a question for you my motor doesnt have a voltage regulator on it is there supposed to be on on the 260 stuff ?

[speedinstream]

Dont run regulater

[nelson edens]

I don't run one on mine. You've got a 16A charging system: the drag fuel pump uses 7A, the ECU uses 5-6A. That don't leave much. Trim it a few times and you're in the negative (<12V)