Wiring Problems '58 35 horse evinrude

[pwrcrzy]

Well I took the boat out this weekend and had great luck with it at first. I started loosing power and running rough,then found as I tried to shut off the motor I was only killing one cylinder as it was still running; although roughly. I had to goose it and return to shut off, but what I think my problems are is the wiring. I look at the transome to find two small relays that were screwed to it. One had two wires off of it and one more coming off. No doubt it is not the original wiring, but can someone tell me the wiring that should be there so I can just bypass this, replace this and rewire the motor. I just have had enough problems and want to solve this issue. By the way when I plugged them back to where I thought they came from, it still would shut down one cylinder. The ignition switch is new and all of the wires are intact and hitting nothing. It seem to have been rewired once. Can someone just help me out with how to wire it supposing the was nothing there to go by, would be easier in my opinion. It also has the starter relay, the one like an early ford on the transome as well. It is a 1958 evinrude big twin with electric start. I have never had this problem also, has always killed firmly on the first try. It kinda caught me blindsided.

Thanks to all.

David

 

[tashasdaddy]

Re: Wiring Problems '58 35 horse evinrude

take some pictures of what you have, and post them. no telling what someone else did wiring it.

 

[pwrcrzy]

Re: Wiring Problems '58 35 horse evinrude

He are a couple of pictures of the wiring. Not sure if it is enough to help. Beside the battery + and - I have four wires coming from the motor. One is the electric choke, one comes from the center of the kill switch, one is a ground and one goes behind the cover to the points plate. What would the relays be for?
Thanks
Ok I am having trouble attaching the pictures. Trying to upload them with a zip folder will not work either. Any suggestions? Email?

 

[freddyray21]

Re: Wiring Problems '58 35 horse evinrude

the one from the "center of the kill switch" ? I think you mean vacuum cutoff switch. It it one of your kill wires. The second kill wire is the one going to the points plate. If it has electric start there should be another wire from a mercury switch on the throttle that goes to the solenoid to provide a ground for it. Don't know what relays are on the transom, but one is probably the solenoid and if yo have a generator then the other is a voltage regulator. If you have a generator there should be two wires coming from it to the voltage regulator.

 

[pwrcrzy]

Re: Wiring Problems '58 35 horse evinrude

Yes one is the vacuum cutoff switch, how does this function? One would go to the points plate, if one cylinder is cutting out, would my problem most likely be in this area. In other words wouldn't the switch kill both cylinders this way, so where it splits in the points plate to both coils maybe? Also has no generator and where would I find the mercury switch? I have seen it talked about in other areas but I do not see anything like it on my motor. Does anyone have a picture? There are two relays in addition to the main starter relay, two small ones like the size of a modern car flasher.

Any help would be appreciated

 

[Sea18Horse]

Re: Wiring Problems '58 35 horse evinrude

You should have two wires going up to the mag plate, one to each set of points. One of the two also goes to the vacuum switch. The vacuum switch grounds one set of points in the case of a runaway situation. The two wires are connected together in the ignition switch when you turn the key off. In effect grounding both sets of points and killing the engine. Since when you turn the key off only one set of points is being grounded that means the other wire is grounded somewhere and not properly connected to the other set of points. You need to find out where that other wire is broken and/or shorted.

I don't know how the mercury switch figures into it but I think it's in the starting side of things not the "kill switch" side. Good luck!

Cheers.................Todd

 

[tashasdaddy]

Re: Wiring Problems '58 35 horse evinrude

you can up load to a free service like photobucket.com then you choose the pictures you want( clik the little box at the bottom left of the picture) scrool to the bottom of the page, clik generate html, it will take you to the next page, scroll down to thumb nails clik on that and copy, then insert it into your post.

also if you are planing on posting pictures, you can use the Blue post reply or the go advanced, manage attachments, there you can upload , directly from your computer. besure you pictures have been resized to fit the format. 640x480 max.

 

[pwrcrzy]

Re: Wiring Problems '58 35 horse evinrude

OK. Here are some pictures of the motor and wiring. I have it with me today so if you can help me and have questions please let me know.

When you say one coil should go to the vacuum switch and both should be connected to the ignition switch to ground when shut off, the one going to the vacuum switch will have a tee in it to the ign. switch? And also is that wire hooked up to the center of the vacuum switch? Is there any way to test the vacuum switch? I took a break from it yesterday, I will try to dig up more today.

 

[pwrcrzy]

Re: Wiring Problems '58 35 horse evinrude

OK.
I want to get this thing on the water this weekend. To bypass the wiring issue, when I get it started, I can unplug the wiring to the vacuum switch and the points plate ground and run them to a seperate grounging switch temporarily to shut it off correct? I just want to make sure my problem was in the relays and quite possibly the relays are bad themselves. I am going to rewire the boat next week or sooner if possible. I have four smaller wires from the motor. I know that one is a ground, one is the choke power wire. One grounds the points plate to shut off the motor, but what does the wire coming from the center of the vacuum switch do?