79 Johnson 140hp,need electric choke wiring help

[VA.LAKEMAN]

Can anyone help me figure out where these wires connect on the engine?

 

[Vic.S]

Re: 79 Johnson 140hp,need electric choke wiring help

What wires are "these"?
The electric choke when fitted is operated by a solenoid coil clamped to the back of the air silencer.

One of "these wires" will presuambly go to that, the other I guess to a source of power.

 

[VA.LAKEMAN]

Re: 79 Johnson 140hp,need electric choke wiring help

What wires are "these"?
The electric choke when fitted is operated by a solenoid coil clamped to the back of the air silencer.

One of "these wires" will presuambly go to that, the other I guess to a source of power.

Purple,yellow and black.Is it possible to describe what the air silencer looks like?Thanks for your help in advance

 

[ezeke]

Re: 79 Johnson 140hp,need electric choke wiring help

The two choke solenoid wires go:

Black to engine ground.

Purple with white stripe to engine harness to C on the ignition switch.

There is no yellow wire on the choke solenoid.

Are you looking at a voltage regulator (click the thumbnail)? That has yellow black and purple wires.

 

[jtexas]

Re: 79 Johnson 140hp,need electric choke wiring help

... Is it possible to describe what the air silencer looks like? ...

It's a big black plastic boxy thing that blocks the front the carburetors.

 

[wilde1j]

Re: 79 Johnson 140hp,need electric choke wiring help

See diagram

 

[VA.LAKEMAN]

Re: 79 Johnson 140hp,need electric choke wiring help

Thanks alot for the replys guys.Mine plugs into the control box and has 3 wires comming out of the plug,yellow,black and purple.I now understand what the air silencer looks like but see no place for any wires to connect.....Im lost guys......

 

[VA.LAKEMAN]

Re: 79 Johnson 140hp,need electric choke wiring help

Would a pic help?

 

[bktheking]

Re: 79 Johnson 140hp,need electric choke wiring help

Yes it would.

 

[jtexas]

Re: 79 Johnson 140hp,need electric choke wiring help

It varies by model, but the choke solenoid isn't always attached to the airbox, more likely, in a bracket fastened to the intake manifold -- it'll have a plunger with a spring on the end, and you attach the other end of the spring to the choke plate linkage on the carburetor.

If the device you're referring to is a metal cylindrical object, it's a rectifier. If it's a black plastic box, it's a rectifier/regulator. Not all models have voltage regulators.

 

[bktheking]

Re: 79 Johnson 140hp,need electric choke wiring help

Choke solenoid is on the back of the airbox, it's got no regulator on that motor, just the 3 wire round rectifier accord to BRP site.

 

[bktheking]

Re: 79 Johnson 140hp,need electric choke wiring help

I think you are referring to the plug that comes off the control box, that feeds the tach and buzzer, ignore that. The wire for the choke comes off the ignition switch, the wire is purple/white, if there is no purple and white wiring coming from the C terminal of the switch your going to have to run one to the choke solenoid.

 

[ezeke]

Re: 79 Johnson 140hp,need electric choke wiring help

As I said before, you are looking at the voltage regulator. Part # 0173640. Not the rectifier, but the regulator. It's a separate and optional part on the 1979 motors.

The tachometer wires coming out of the remote control would be purple, back, and gray.