need help with John Deere 3020

Chestrr · Apr 13, 2016

I have a late model 1970 John Deere 3020 gas. Im installing the Pertronix electronic ignition and need to remove or bypass the ballast resistor. Where is this resistor located? Any advice to remove it or bypass? Thanks

big jt · Apr 13, 2016

I believe the resistor is built into the wiring harness. Just run a wire from the ignition switch to the coil/pertronix unit.

jt

David G · Apr 13, 2016

Did you change the coil?

If not I would assume you leave the resistor in place.

Chestrr · Apr 13, 2016

Yes, I replaced the original 6 volt coil with a 12 volt coil. The resistor limits voltage to coil to 6 volts with key in "run" position but sends 12 volts to coil when "cranking". I want 12 volts all the time.

Heat Houser · Apr 13, 2016

I believe the resistor is on the key switch. Anyway, it is on my 4010 gasser. Assume the 3020 would be similar.

dairyman · Apr 13, 2016

If I rember right from when we were having problems with dad's 3020 the resistor is under the dash. Thinking you could find it and remove its wires then hook them together.

Cliff Nelson · Apr 13, 2016

JT has it right. They used a resistance wire in the harness on 3020/4020. Run a new wire from the switch to the coil. Also, be sure to install graphite plug wires with that system. Metallic wires will damage the module. 3010/4010 had a resistor built into the key switch.

need help with John Deere 3020

Chestrr

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big jt

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David G

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Chestrr

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Heat Houser

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dairyman

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Cliff Nelson

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