Electric tach

[bacongrease]

 Bought an elec tach, no instructions with  5 wires.   Any info on how to wire it?

Thank you...     

2004 Stone.

[Antietam Classic Cycle]

Need more information. What brand of tach?

[wirespokes]

More info is definitely needed!

Electronic tachs require three wires - +12V, ground, signal (from the coil negative).

Additionally, another wire (or two) would be for illumination.

Let us know what you've got and we can get more specific.

[Antietam Classic Cycle]

Guess it's time to warm up my crystal ball. It might take a while since it has tubes. 

[bacongrease]

Need more information. What brand of tach?

cheap Chinese,  unbranded.  I identified the + & - for illumination, that leaves 3 wires.  Many pics on the web but all are different,  colored wires going to different places.  eg.  black is ground on one pic, green is ground on another.

[wirespokes]

What colors are the illumination wires? Red is usually +12 and black ground. The same two colors are probably Tach plus and ground, which leaves the other for the signal.

At that point, there's probably a jumper or switch to configure to the number of cylinders.

[bacongrease]

 Green
Black
Black/yellow
Orange
Blue

[guzzisteve]

I would wire it like an EV of that year, seen as you had no tach on bike.

[bacongrease]

 Ha...I had  wired it 2 different  ways, (green ground, black ground)  both times smoke came from under the tank.  So I thought  maybe i should wait and ask for help.

 

[guzzisteve]

These are colors from wire diagrams in service book-------------------------

Lite bulb-- += Yellow=power/lites       Rpm -- += Red/Black- wire is positive for idiot lites
                -=  Black=Negative                        -= Yellow/Black- wire goes through resistor(one way) to ECU injector pulse goes to negative on gauge
                                                                   S = Bkack- Negative

[bacongrease]

 Several  various tach instructions have the resistor wire just wrapped around a spark plug wire..who woulda though that will be enough.     

[guzzisteve]

It goes to ECU, you can look up the pin #.

[twowings]

Guess it's time to warm up my crystal ball. It might take a while since it has tubes. 

A DEFINITE improvement over the steam-powered ones...

[bacongrease]

It goes to ECU, you can look up the pin #.

 Pin# ?  You mean open up the ECU and connect the sender wire somewhere?