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h14 igintion switch


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#1 Jehtro OFFLINE  

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Posted August 01, 2011 - 10:56 PM

so my project h14, needed a new ignition switch,

i think i've got everything lined up to my retro fit ignition switch, but i can't figure out what this black wire is for? seems to rundirect to the motor, go up with the red and orange from the recticifer,

i think its to short out the coil and stop the engine, it has a counstant 12v, with the key off even, but since my old switch is bad, can't put a test light to it.

i just touched the switch over to start, i've got spark and the starter turns over

the wiring on this tractor has been hacked into a few times,

just don't want to start this tractor and wreck something,

manual just says it runs to the motor harness,

any ideas?

#2 Bolens 1000 ONLINE  

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Posted August 02, 2011 - 06:15 AM

h14.jpg

#3 Bolens 1000 ONLINE  

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Posted August 02, 2011 - 06:17 AM

Looks like it goes into the ignition switch.........

#4 Jehtro OFFLINE  

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Posted August 02, 2011 - 01:23 PM

I guess I'm trying to understand the function of the wire.

Yes it goes to the ignition switch, but what exactly inside the engine does it connect to?

My old switch must be bad as I can't find anywhere when it connects to another post on the switch.

I have my new switch in place and I have power to the coil and starter when I want them. I don't have the black wire connected at all.

Just trying to figure out what todo with it.

It must be a coil ground to short out the spark and stop it.,

I spoke with a retired small engine guy, he said these older motors have an internal coil that will have to be ground to stop the spark.

He said the ignition switch momentary will energize the coil for starting, then once its running it no longer requires power from the switch.

Said you could remove the battery feed power from the coil and it will keep going,,,,,???

#5 Bolens 1000 ONLINE  

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Posted August 02, 2011 - 04:41 PM

I haven't worked on many Tecumseh engines so I'm really not sure about an internal coil.
Hopefully a Tecumseh guru will be able to help you out.

#6 Jehtro OFFLINE  

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Posted August 04, 2011 - 09:58 PM

Okay, I think I got it figured out,

Couple of Beers later, and the mechanic was right, Black wire is a coil short out, connect it to Ground and the engine shuts down. The engine will run once started with out power coming from the ignition switch.

I guess my switch was bad and not grounding out.

Anyway, my new TSC switch doesn't have a ground out function.

So I've rigged up a kill switch beside the key.

I ended up moving the starting solenoid up beside the battery, just easy to access terminals etc,

I swear its a war with this tractor, Everything I touch breaks, or requires another part.

The battery cable terminals fell off in my hand, change the fuel filter, clamps I didn't touch started leaking,

#7 Bolens 1000 ONLINE  

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Posted August 05, 2011 - 06:10 AM

Glad to hear your making some headway.




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