77 35hp evinrude starting wires?

[eric e]

The 77 35hp evinrude I just picked up to test out, has a set of wires coming out of it. (ground and + , pluse 5 wires) After searching on here and looking at several links from here..
http://continuouswave.com/whaler/reference/ignitionSwitch.html
http://continuouswave.com/whaler/reference/wireColorCode.html
I think I know what all the wires are for. My questions are, I have seen people talking about a wiring "control box". DO I need this start the motor? My boat is wired for electric start, and has a keyed ignition wire assembly run to the back of the boat. Could I just wire the motor wires into that, or do I need the "control box"? MY other question is, the red with a violet stripe, which I belive is (RED with VIOLET stripe = Fused battery supply to ignition switch) has a battery terminal end on it. Do I put that on my battery, or put a inline fuse in it, and run it to my b terminal on my ignition switch? One last thing, does anyone have a engine wiring diagram for this? Thanks for any help guys!

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Hello Eric,

The answer to your 1st question is no. You do not need a "control box" for your ignition to work. Usually what is being refered to as a control box is the controls for the shift and throttle which most of the newer ones also have the key switch, kill switch, tilt/trim. Some also have an overheat alarm, and a connection for a tach.

Now if you have a dash mounted key switch with 5 wires and your engine has the ignition and battery wires already attached, should be a total of 7 wires, it's just a matter of matching them up and connecting them.

On mine it goes; 2 battery wires, + and -. 5 wires in the harness which are 1. ignition, 1. choke, 1. neutral safety switch and 2 negitives or grounds one of which is just for the kill switch.

Hope this helps. Does your engine have a big Red or Black plug in it?

 

[steelespike]

Re: 77 35hp evinrude starting wires?

Keep in mind the ignition is self generating (magneto) ignition and has no battery connection.Key switch is open to run and closed to ground to stop.

 

[eric e]

Re: 77 35hp evinrude starting wires?

Keep in mind the ignition is self generating (magneto) ignition and has no battery connection.Key switch is open to run and closed to ground to stop.

A little confused on that one. Are you saying the large + and - wires that go to battery are to recharge only? If so, how does the ignition get power? And there are not big red or black plugs in it.

 

[eric e]

Re: 77 35hp evinrude starting wires?

I got into my harness close to the motor, and I do not have a yellow with red stripe. I have the normal purple with white, red with purple, black, black with yellow, and a white one. Do you think it could be instead of the yellow with red, which is for Start-engine starte solenoid coil?

 

[eric e]

Re: 77 35hp evinrude starting wires?

Sorry guys I must have been sleep walking this morning. It has a large black plug inside, which the five wires go through. On the motor side of the plug, I still do not have yellow with red. Anyone think the white is in place of the yellow with red on this one? Thanks..

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Eric,
The 2 battery cables should be + (positive) to the starter solenoid and the - (negative) to ground. The ugnition will get power from another wire coming of the starter solenoind.

From the plug end on the motor follow it back and look for a wire that looks like it has a inline fuse holder. It should be a larger gauge wire and will go to the solenoid. That is the ignition wire.

See if you can find this 1st before we go further.

 

[eric e]

Re: 77 35hp evinrude starting wires?

I found a fused wire the goes the terminal side of the solenoid farthest from the starter. From the right side of it going into a taped up harness, it appears to be red with violet stripe, is this correct?

 

[eric e]

Re: 77 35hp evinrude starting wires?

Here is a picture of it. It appears the red with violet is the fused one, and appears the white one goes to the bottom of the solenoid??
I pulled the tape back from the wires a little to try and get a better view.

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Nice clear picture!

That Red-Violet wire is part of the ignition circuit. Now regardless of color the 2 wires that look white coming from the solenoid are also part of the ignition circuit. If you follow those 2 back you should find 1 goes into the plug and 1 goes to ground. So the Red-Violet wire and the smaller wire (white?) going back to the plug are what you need for ignition.

Now a couple more ?'s for you.
The plug on the motor side is male, do you have the female plug connection that would go to the switch? Do you have a multimeter or ohm meter?

If you look at the pins in the plug there are 2 large pins and 3 small pins. The 2 large pins should be the Red-Violet and the (white?) wires. The Red-Violet should go to the "B" terminal on the switch and the (white?) to the "S" terminal on the switch.

OK so far?

 

[eric e]

Re: 77 35hp evinrude starting wires?

Inside the motor, I have the male and female plug, ,it then runs out of the motor. I took it apart to look at the pins. It then runs out of the motor about two feet and ends like the picture. See in the picture how the red and violet has a battery terminal on the end? That does not go to the battery, but to the B terminal on my ignition switch? And yes I do have a multimeter.

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Wow, that makes this much easier!

From what I see in the picture the 1st thing you will want to do is cut off all those ends, the one Red-Violet ringed wire looks pretty corroded as do those battery cable ends.

The connections should go like this;
Red-Violet to "B" on switch
(White?) to "S"

The 2 blacks should be grounds with the black striped wire going to the kill switch on the raised "M' on the switch and the solid black to the other "M", then guessing the blue is going to "C" on the switch.

With just the Red-Violet, White and black connected it should start and shut down by the key, there will just not be connected to the auto choke and a kill switch.

If you had a multimeter you could check the continuity of the wires with where they are supposed to be connected to assure they are correct.

Does the key switch have the push in choke function?

 

[eric e]

Re: 77 35hp evinrude starting wires?

Yes it has a push in choke. While not sure what to do with the motor wires, I tested the ignition wires. The choke and ignition wires work as they should, or at least they were carrying the votlage across when I tested them. Now to check the white wire, for continuity, with a mutlimeter, what is the best way to do it?

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Set the meter so it's reading ohms, then just connect one lead to a wire, say the white one. Then with the plug for the harness connected touch the lead to the meter to the white wire on the solenoid. You should get a reading. Then try the blue wire and go to the wire for the choke. Again if you get a reading you will know that wire IS for the choke.

Isn't this fun! I just went through this whole proccess myself with a 1978 35hp Evinrude. On that one the wire scheme was different than anything I'd seen and wasn't sure if the plug pins matched.

 

[eric e]

Re: 77 35hp evinrude starting wires?

Ok, well I hooked the wires up real quick, and every 2 out of 3 times, I get a clicking sound , not sure where and about the third time, it will engage the starter. Will corroded wires make it do that, as it may not be pulling enough juice? The large + and - are pretty bad. Does anyone know what gauge they are? I am guessing somewhere between 8 and 4 gauge? Thanks..

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Sounds like you got it! Yes bad battery cables can cause that.
Again, cut off those ends, strip back the wire until you get to some good clean stuff then for now just attach a couple of bolt on battery clamps and see what happens. 6 ga. battery wire should work just fine for these motors, 8 ga is a little light but will work if not going very long.

 

[eric e]

Re: 77 35hp evinrude starting wires?

Unfortunately they are corroded all the way back. On the + you can see corrosion all the way to where it attaches to the solenoid. I cut into the harness over half way up, and it looks bad there too.. Where is a good place to get 4 or 6 gauge wire? All I can find around here is stereo wire..

 

[bonz_d]

Re: 77 35hp evinrude starting wires?

Don't know where you are located but the Super Walmarts have battery cables in their auto sections or again any auto parts store will have what you need. 6 ga cables are enough, no need for 4 ga.