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Wayne, Journeyman
Category: Agriculture and Farm Equipment
Satisfied Customers: 9666
Experience:  34 + years as a mechanic
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2010 Deere Tractor issue with electrical. Changed over

Customer Question

2010 John Deere Tractor issue with electrical. Changed over positive ground system (with generator) to alternator system with standard pos/neg polls. Coil has starter and ignition on pos side and distributor on neg side which is opposite from how the generator use was wired. Not getting spark. I can send pictures
Submitted: 1 year ago.
Category: Agriculture and Farm Equipment
Expert:  Wayne replied 1 year ago.

Hi I'm Wayne

I will help you with this

yes send Pics,

Customer: replied 1 year ago.
Will need to send from another computer. Will have pics for you in next 30 min.
Expert:  Wayne replied 1 year ago.


Thank you

your alternator is now NEG ground correct

Customer: replied 1 year ago.
I'm sending 4 pictures. We can chat over the phone once you have them. My # 1-***-***-****
Customer: replied 1 year ago.
Alternator is pos. Hooked directly to battery.
Expert:  Wayne replied 1 year ago.


OK, with the neg ground system 12volt wire goes to + side of coil

Dist wire goes to (-) side of coil, make sure you have 12 volts at the coil key on

dist cap off, see if spark in the points

if no ground the dist plate to the block and see if you

get spark that way

Customer: replied 1 year ago.
I have hooked all up as you indicated. No spark in distributor. Not understanding your last direction about grounding
Expert:  Wayne replied 1 year ago.


Many times on these older tractors they loose the ground from

the point plate to the dist , run a temp jumper wire from a good ground to

the point plate and spin it over

Customer: replied 1 year ago.
I do show power to pos side of coil. This comes from the starter along with ignition switch. Motor turns over, just no spark. OK...will do on grounding point plate. I'll be back in 15 min. Thank you.
Expert:  Wayne replied 1 year ago.

OK, I have to step out for 15-20 min myself

Customer: replied 1 year ago.
NO spark at points. In addition: I have installed new cap and rotor, condenser, points and spark plugs.
Customer: replied 1 year ago.
There is no cell service here (I'm in the I have to run back and forth from the shop to the house incase we do end up over the phone.
Customer: replied 1 year ago.
Picture of inside of distributor. Please advise if wire connections look right to you.
Expert:  Wayne replied 1 year ago.


Pic is too blurred , stand back more

Customer: replied 1 year ago.
This is how the tractor is wired. Hope you can read it.
Customer: replied 1 year ago.
will take another pic of distributor. Did the sketch turn out readable?
Customer: replied 1 year ago.
Two more pics of dist.
Customer: replied 1 year ago.
where the distributor wires all connect along with the points there is a post. Inside this "post and slide on clamp" is a small piece of plastic. Question: should that plastic be there or should all connections be grounded and tight with the clamp and distributor electrical connection post?
Customer: replied 1 year ago.
Wayne are you there?????
Customer: replied 1 year ago.
Wayne, Please respond
Customer: replied 1 year ago.
Relist: Other.
no response from expert after several attempts with conveying information.