charger 10 carb issues

[upstateyankee50 59]

it has been a few months that I have added any more information on my 1969 charger 10 with the issue of it wanting to start ;well after walking away for some time I went back at it again; this time I really don't know what I did other than to change the head gasket and the gasket to the carb ;well with a little bit of spray in the throat  the old girl fired right up and yes with an adjustment on the air gap as well ;so I hoped on it and road around the  back yard and it ran perfect and still each day that I start it she fires right up so it seems that at times walking away and leaving things alone than going back and things work out ;

now I need a little help with the other old tractor that I bought last weekend it was a little over a 2 hour ride and than back but for the price of 250 I thought I did good ;it is a 1968 charger 9 with the 10 horse Tecumseh  motor model  L-7931 ;it seems that some one tried to steal it and they busted the key switch in doing so ;a lock smith could not repair it so I had to buy a new switch 'so now the issue as when I was cleaning it as the frame and motor was really nasty as dried on oil and more crap so during that time I noticed a red wire hanging near the left front tire 'I do now where the wire connects to the key switch  but now really sure where the other end goes and for sure I do not want to hook it up wrong as I could fry the solid state ignition if one of the members could lead me in the right direction I sure would appreciate it ' the deck I am not sure if it is the correct one as that is not a issue right now as long as I can get it to start ;really for the year it is in very nice condition ;I look forward to any one whom night know where that wire attaches to ;again thanks 

if most do not recall the 69 that I had issues with here is a picture and the other pictures are the new one to the collection which makes 5 horse in the barn 

Edited June 26, 2022 by upstateyankee50

[gwest_ca-(File Mod) 11,389]

There is a wiring diagram here

Have you had the motor running? And did the key switch shut the motor off? The red wire may be the ignition wire. Ground it to the frame to see if it shuts the ignition off. If it does it goes to the M terminal on the ignition switch. If you do not have an M terminal you have the wrong switch.

Do not allow any battery voltage into that ignition wire. That is what releases the magic smoke. 

[upstateyankee50 59]

47 minutes ago, gwest_ca said:

There is a wiring diagram here

Have you had the motor running? And did the key switch shut the motor off? The red wire may be the ignition wire. Ground it to the frame to see if it shuts the ignition off. If it does it goes to the M terminal on the ignition switch. If you do not have an M terminal you have the wrong switch.

Do not allow any battery voltage into that ignition wire. That is what releases the magic smoke. 

thanks for the reply and when I went to see the tractor the seller did have it turn over but it seems that he bought the wrong key switch so it did not really stay running as it just spun ;the new switch just like to old one is a 3 prong switch ;but I do know where most of the other wires go but not that red one 'even thought her had the wrong switch the motor did shut off 

[upstateyankee50 59]

4 minutes ago, upstateyankee50 said:

thanks for the reply and when I went to see the tractor the seller did have it turn over but it seems that he bought the wrong key switch so it did not really stay running as it just spun ;the new switch just like to old one is a 3 prong switch ;but I do know where most of the other wires go but not that red one 'even thought her had the wrong switch the motor did shut off 

stupid question yes the red wire does attach to the magneto as I have never had one of these types  as my 69 charger 19 is set up so different and it has the voltage regulator ;the thing is as I mentioned in my post during the cleaning there was a red wire hanging on the left front tire and I thought at first it was for the front head lights but there are all connected 'again I do know that the red wire does attach to the key switch on the M post but not sure as to where the magneto is ;

[upstateyankee50 59]

On 6/25/2022 at 9:28 PM, upstateyankee50 said:

thanks for the reply and when I went to see the tractor the seller did have it turn over but it seems that he bought the wrong key switch so it did not really stay running as it just spun ;the new switch just like to old one is a 3 prong switch ;but I do know where most of the other wires go but not that red one 'even thought her had the wrong switch the motor did shut off 

let me try to explain this ordeal; when I went to see the tractor, the seller told me that someone tried to Stell it the night before I arrived which I thought was odd as it has sat there for a very long time and once I arrived he was trying to use a new key switch that wasn't right as it was more for a bigger tractor as it would never fit in the hole for this wheel horse ;so during my visit he wired the key switch up yes he connect  the 2 correct wires that went to the switch the black wire for the cigarette lighter plus the battery than he added the red wire which again I thought was wrong  ;yes it did spin over but never fired 'according the diagram the red wire goes to the magneto but testing it as a red wire which as a rule is hot my tested showed no current 'odd really that even without turning the key the head lights and the lighter work ;so is this red wire a ground to the frame ' really this something new for me 

[rmaynard 16,198]

Wiring on most of these tractors is simple. And getting back to the basics is a must. First you must be sure that you have the correct ignition switch for that tractor/engine. Next, the body of the switch must be grounded. Check also the ground from the battery to the frame. Eliminate the accessories (A on the switch) until everything else works. The red wire from the magneto to the M on the switch is simply a kill circuit. The two other wires coming out of the engine are the stator which provides AC to the regulator/rectifier. The green wire from the regulator/rectifier provides 12vdc which charges the battery. With the ignition switch ON, the magneto is not grounded and the act of turning over the engine causes the magneto to apply spark to the sparkplug.  

[upstateyankee50 59]

10 hours ago, rmaynard said:

Wiring on most of these tractors is simple. And getting back to the basics is a must. First you must be sure that you have the correct ignition switch for that tractor/engine. Next, the body of the switch must be grounded. Check also the ground from the battery to the frame. Eliminate the accessories (A on the switch) until everything else works. The red wire from the magneto to the M on the switch is simply a kill circuit. The two other wires coming out of the engine are the stator which provides AC to the regulator/rectifier. The green wire from the regulator/rectifier provides 12vdc which charges the battery. With the ignition switch ON, the magneto is not grounded and the act of turning over the engine causes the magneto to apply spark to the sparkplug.  

thanks for the information and yes the key switch is the correct one as the numbers on the old one are the same as the new one and it is the 3 prong set up ;I will try that as you mentioned and hope I can get spark ;I will let you know what happens and yes the key switch is grounded to the dash as they are suppose to be and the battery negative side is grounded to the side of the block on the right side and that might be another issue which I can change and but it on the frame I  did notice that lighter and lights do come on even before the key is turned and I am sure that isn't correct either ;tomorrow is a different day and just maybe I can get the old girl to start  again thanks