Re: Electronic ignition?

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Posted by Tim Daley(MI) on December 03, 2020 at 07:16:38 [URL] [DELETE] :

In Reply to: Re: Electronic ignition? posted by Peter on December 02, 2020 at 15:55:43:

HiYa Peter-
Welcome aboard. We need to know several things to proceed. First, do you have the OEM 6V/POS GRN electrical setup or has a 12V switch out job been attempted? 6V used a generator and a round cutout; 12V would use an alternator, no round cutout. However, do not assume because your battery is 6V or 12V that the wiring is correct for that system. Unless a wire has an obvious loose or broken connection, chances are high dirt isn’t the problem. It’s a fact that 99.98% of all non-starting issues are due to incorrect wiring, regardless if 6V or 12V. I don’t know where “on-line” you got your wiring diagrams from but the OEM Ford Owner & Service Manual and the I&T FO-4 Manual has the correct wiring diagrams. If you get copies of all the ESSENTIAL MANUALS you will be investing in the most valuable tools for your tractor. We have some in our MANUALS forum; all can be purchased at JUST8Ns.com. We also have a ton of valuable information and documents in our HOW-TO’s forum. All 9N & 2N tractors used the same electrical setup from s/n 12500 up thru 1947. The system uses: 6V AG type battery; Ballast Resistor; Front Mount Distributor; 1-Wire Square Can Coil; 1-wire/3-Brush *Generator; Roundcan Cutout Circuit; 1-Wire Starter Motor with NO SOLENOID; 30/30 Ammeter; Ignition Key Switch; with a neutral safety starter pushbutton. Lights were never factory installed items. Lighting kits were sold at Ford Tractor dealers as optional accessories. Some wired their lights incorrectly if done by the owner. While troubleshooting electrical, best to disconnect lights from the circuit til root cause problem is determined. On a 12V switch over job the roundcan cutout and gen are removed from the circuit. The OEM Ballast Resistor is still used and if the coil is 6V, will require an external 1-OHM resistor. Changing to a 12V coil will eliminate the need for the extra resistor. It’s good you used a VOM to test continuity. The 6V/POS GRN system is the #1 most misunderstood item with Fords. #2 is the front mount distributor. The unit must be tuned up on your bench, points set and timed per manual, and tested before mounting back on engine. There is only one correct way to mount the distributor so tangs align on cam shaft. If it’s forced on the wrong way, it will destroy the base the second power is applied. Lastly, whether you use a generator or an alternator, you must use a fan belt tensioning device to maintain proper belt tension otherwise the unit won’t charge the battery correctly if at all. The Ford 2N-10000 generator introduced a belt tensioning device mounted on the barrel. Alternately they offered a belt kit for the prior 9N-10000-C unit. Firing Order is: 1,2,4,3 CCW. It’s easy to get #3 and #4 plug wires crossed up so always check. You can get some more free downloads in the HOW-TO’s forum –‘WIRING PICTOGRAMS by JMOR’; and ’75 Tips for N Owners’ by Bruce(VA)

FORD TRACTOR 9N & 2N, AFTER S/N 12500, OEM 6V/POS GRN WIRING:



FORD 9N-10505-B CUTOUT –USED AFTER S/N 12,500 TO S/N 258504 ON 9N & 2N MODELS ONLY:

FORD OEM BALLAST RESISTOR -USED ONLY WITH FRONT MOUNT DISTRIBUTOR:


HELP: The LH resistor Terminal Post connects to the COIL Stud Terminal Post as you face the back off dash. OEM Wiring is RED.

FRONT MOUNT TIMING PROCEDURE:


FORD FRONT MOUNT DISTRIBUTOR – WHAT HAPPENS WHEN MOUNTED 180° OFF:



FORD TRACTOR FRONT MOUNT DISTRIBUTOR FIRING ORDER; 1,2,4,3 CCW:


FORD 9N-10000-C TRACTOR GENERATOR WITH OPTIONAL BELT TENSIONING BRACKET:


WIRING PICTOGRAMS by JMOR; OEM 9N & 2N ELECTRICAL SETUP:


FORD 9N/2N ESSENTIAL OWNER/OPERATOR/PARTS/SERVICE MANUALS:


Tim Daley(MI)


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