Plug wires & electronic ignition question

Boss Hog · Apr 5, 2015

I have an MF35. SN is SGM 248755. Looks like it takes distributor 194058M91 (AGCO part#) or 1112643. (Delco-Remy part#)

I was looking at putting this electronic ignition conversion kit in it:

http://www.yesterdaystractors.com/Massey-Ferguson-135_Electronic-Ignition-Conversion-Kit-High-Perfomance-12-Volt-Negative-Ground_91145A.html

My concern is a note in the listing which says "Ignitor II applications can not be used with solid core ignition wires, can be used with our ignition wires p/n S.66442."

So I have a look at their ignition wires:

http://www.yesterdaystractors.com/S66442_Spark-Plug-Wire-Set-4-Cylinder-Universal_22193.htm

If they're only $10.86 they surely aren't anything special. The ones on the tractor came from a car parts place, and are a similar "universal" 4 cylinder set.

How do I know if there's a conflict with the wires I have?

miner09 · Apr 5, 2015

S 66442 is a Sparex kit. You will have to put the (distributor) ends on after you cut your length.

Steve@Advance · Apr 5, 2015

To my knowledge, there are only 2 options for plug wires, solid (wire) and resistor wires.

You can usually look at the markings on the outside of the insulation, should have a reference to being either resistor wire or solid, or non resistor. Possibly a brand name and style that can be looked up as to what type wire they are. Also looking at the end, if there is a black string or a string wrapped with a coil of wire, they are resistor wires. If there is an actual wire in the center, they are solid. Sometimes there is a steel wire clip that sticks up inside the wire in resistor wires, make sure that is not what you're seeing, and thinking it's solid wire.

If they are solid wire, you can buy universal resistor wires at the auto supply.

My question is, what difference would it make to the electronic ignition? But for warranty purposes, better do what they say to do.

Boss Hog · Apr 6, 2015

[i:37bc064419]"looking at the end, if there is a black string or a string wrapped with a coil of wire, they are resistor wires."[/i:37bc064419]

I'm virtually certain that's the kind of wires they are.

Thanks for the info.

Plug wires & electronic ignition question

Boss Hog

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miner09

Well-known Member

Steve@Advance

Well-known Member

Boss Hog

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