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1972 100 hp Johnson

J

jreed

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Can someone explain how the or

Can someone explain how the original shift controls for a 1972 100 HP Johnson motor were set up.
 
John.... Could you be a little

John.... Could you be a little more precise. Are you asking how the wiring connects to the shift switch?
 
"yep..........2 solenoids,1 hy

"yep..........2 solenoids,1 hydr pump,1 shift switch...1 clutch dog plunger,spring loaded,in forward....thin,lower unit oil....
johnson box,had a rlr sw,evinrude,same design,chose push buttons....voltage to 1 sol gave neutral,v to both,gave rev,..no volt gave forward....pleasure to dr,when,wking good...susceptable???..to numerous prob's...esp,as they aged."
 
The driver controls I have are

The driver controls I have are not original and I would like to know how the shifting of gears was done by the driver. Thanks
 
"The shifting method is electr

"The shifting method is electrical.... The Johnson control box has a toggle switch within it.

We need to know exactly what control you now have, described as precise as possible. Pictures would be a help.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay store at:

http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store"
 
What I have now is a single le

What I have now is a single lever control with a choke switch and 2 toggle switches on the dash which need to be worked together to shift gears.
Very inconvenient.Can something better be worked out or do I need the original control box.How did the original work? Thanks.
 
"The original control box is t

"The original control box is the safest, easiest way to go. There are a couple ways to skin the cat though. Joe Reeves has posted a way to hook it up through a single toggle switch that will give you neutral-forward-reverse in one switch. Another method is a marine light switch. All the way in would be forward. First notch out would be neutral, all the way out for reverse. Either of these methods has safety issues in that the switch could be easily bumped in to gear. There is also no interlock to prevent shifting at high throttle settings."
 
"(Toggle Shift Switch Setu

"(Toggle Shift Switch Setup For The Hydro Electric Shift Unit)
(J. Reeves)

NOTE (Disclaimer) - The following toggle setup will suffice BUT it is extremely dangerous. Should you use it, you are agreeing to use it at your own risk with myself disavowng any responsibility for its design or use.

Due to the unavailability of the "Push Button" (Evinrude) or "Toggle Type" (Johnson) shift switch that is required for the "Hydro Electric Shift" type lower units that existed between 1968 and 1972, many boaters have asked how they could rig up a toggle switch to perform this shifting function. There may be much better solutions but the following is what I have come up with.

One must keep in mind that wiring a toggle switch in such a manner allows one to accidently shift from forward to reverse at full throttle. This could and probably has resulted in injuries to boaters, not to mention the mechanical damage. Should this or any other problems arise/occur, I am in no way to be held responsible for the toggle switch to shift switch replacement mentioned here.

For the above reason, I strongly suggest that the toggle switch have a hinged hard case cover installed over it so that the toggle can never be thrown/toggled accidentally.

Now, with a single pole double throw toggle switch installed so the "Green" wire connection is facing up or away from you, make the following connections to the terminals on the back of the toggle switch.

......O <--- Green Wire

......O <--- 12 volt Supply

......O <--- Blue Wire

Now, between the Green wire and Blue wire terminal on the toggle switch, connect a diode capable of handling 12 volts (available at Radio Shack etc). Be sure to install the diode so that the voltage will travel from the Blue wire connection to the Green wire connection only...... and not vice versa!

Now, if you have installed the switch as above, with the toggle pulled all the way back (towards yourself), contact will be made between the 12v supply and the Green connection. This puts the unit in Neutral. The diode prevents any voltage from gaining access to the Blue connection.

Pushing the toggle lever to the middle position results in no voltage being supplied to either wire. This results in the spring loaded clutch shifter dog in the lower unit throwing the unit into forward gear.

Pushing the toggle switch lever all the way to the front position will have the center 12 volt supply connected to the Blue wire connection, and due to the diode, that 12 volt supply will also be supplied to the Green wire. This results in having the unit in reverse gear.

Thousands of parts in my remaining stock. Not able to list them all. Let me know what you need and I'll look it up for you. Visit my eBay store at:

http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store"
 
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