2003 Yamaha 70TLRB gauge wiring diagram

I'm trying to wire the gauge on my 03 sea chaser with a 70TLRB motor. If anyone could please tell me where I can purchase a wiring diagram for the Fuel, Battery, Trim, Speedo etc. I need to know what are the wiring color goes to which of the gauge. (It has an aftermarket ignition switch)

Thanks so much.

[boats.net]

Since it's an aftermarket ignition switch it's hard to say what color wires they used.
Most boats use:
Purple- key on power, ign terminal on gauges
Black- ground, grd terminal on gauges
Grey- tach signal wire, sender terminal on gauges
Blue- backlight in gauges
Pink- fuel tank sender wire, sender terminal on fuel gauge

I didn't ask the right question, what I meant to ask you was the the wiring from the engine harness to the ignition switch.

Thanks so much in advance.

[boats.net]

Red 12 volts positive
Black ground
Yellow 12 volts key on
White ignition stop circuit
Dark green tach signal
Dark blue choke
Light green trim down
Light blue trim up

Thanks so much. Do you know if this motor have a Temp gauge ? If it does do you know what color is the wire ?

[boats.net]

If you use the Yamaha digital multifunction tach it will show a temp overheat warning light or you would have to install a temp gauge and temp sender to read engine temp.

Yes, that is what I'm planning to do, to install a temp gauge, but I do not know what color is the wire for the temp gauge coming from the engine.

Also thanks for everything, all my gauges work fine now with you wiring color code.

[boats.net]

You would need 688-83591-00-00 Temp sending unit that threads into block and connects to temp gauge.
40-90TempSenderPort.JPG
Your choice of Temp gauges
6Y5-83590-00-00 Pro Series Temp Gauge
6Y7-83590-00-00 Black Face Temp Gauge
6Y7-83590-10-00 White Face Temp gauge
Yamaha Temp Gauge Prices