Ferguson 30

I need to know how to make a Ferguson 30 tractor from a positive ground to a negative ground?

Trying to convert the tractor over to a negative ground with alternator?

Well, you're on the right tract - the alternator modification is the first step - then you'll need to replace the starter and possibly reverse the wiring on the ignition/coil circuit. All of the lighting will be fine but any guages may want to read backwards and will also need attention.

Fender 526904M91 Ford 9N 2N 8N NAA Massey Ferguson TO30 TO35 30 35 F40 50 MORE
Fender 526904M91 Ford 9N 2N 8N NAA Massey Ferguson TO30 TO35 30 35 F40 50 MORE
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Radiator Massey Ferguson TEA20 TO20 TO30 TO35 35 181623M1 181623M91
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Muffler Massey Ferguson 165 175 180 Ind 30 3165 194431M95 523394M91
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IT Shop Manual FE 2 Massey Ferguson TE20 TO20 TO30
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Carburetor Massey Ferguson 30 65 165 255 235 245 Massey Harris 33 333
$385.00
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Tachometer Cable Massey Ferguson 30D 50E 50 165 168
Tachometer Cable Massey Ferguson 30D 50E 50 165 168
$7.19
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Oil Pressure Gauge Massey Ferguson TE20 TO20 TO30 TO35
Oil Pressure Gauge Massey Ferguson TE20 TO20 TO30 TO35
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Grille 194181M91 Massey Ferguson 30 31 150 165 175
$118.00
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Spindle Left Massey Ferguson 35 TE20 TO20 TO30 TO35 180349M92
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Muffler Massey Ferguson 50 230 240 250 290 20 30 31 32 40B
Muffler Massey Ferguson 50 230 240 250 290 20 30 31 32 40B
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Muffler For Massey Ferguson TE20 TO20 TO30 TO35 35 135 180364M91
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Carburetor Massey Ferguson 135 230 TE20 TO20 TO30 12994
$385.00
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Main Bearings Standard Massey Ferguson Continental Z120 129 TO20 TO30
$113.00
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Steering Wheel Massey Ferguson TE20 TO20 TO30 TO35 35 F40 50 65 85 88 Super 90
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Spindle Right Massey Ferguson 35 TE20 TO20 TO30 TO35 180346M92
Spindle Right Massey Ferguson 35 TE20 TO20 TO30 TO35 180346M92
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Brake Disc Massey Ferguson 30 31 40 50 65 85 88 90 135 150 165 175
Brake Disc Massey Ferguson 30 31 40 50 65 85 88 90 135 150 165 175
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Sediment Bowl Assembly Massey Ferguson 20 30 50 135
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Thermostat 160 Degree Massey Ferguson TE20 TO20 TO30 836000M1
Thermostat 160 Degree Massey Ferguson TE20 TO20 TO30 836000M1
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Fuel Tank Massey Ferguson TE20 TO20 TO30 181637M91
Fuel Tank Massey Ferguson TE20 TO20 TO30 181637M91
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Steering Arm Massey Ferguson 30 31 165 175 3165 523112M91
Steering Arm Massey Ferguson 30 31 165 175 3165 523112M91
$225.70
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Starter Drive Massey Ferguson TO20 TO30
Starter Drive Massey Ferguson TO20 TO30
$45.00
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Starter Massey Ferguson 181541M91 1900347M91 1109457 TO20 TO30 TO35 35
Starter Massey Ferguson 181541M91 1900347M91 1109457 TO20 TO30 TO35 35
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Starter Switch 181679M1 Massey Ferguson TO20 TO30
Starter Switch 181679M1 Massey Ferguson TO20 TO30
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Radiator Hose Lower 180145M1 Massey Ferguson TE20 TEA20 TO20 TO30
Radiator Hose Lower 180145M1 Massey Ferguson TE20 TEA20 TO20 TO30
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Hydraulic Oil Level Indicator Massey Ferguson TO20 TO30 TO35 193400M1
Hydraulic Oil Level Indicator Massey Ferguson TO20 TO30 TO35 193400M1
$9.55
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Clutch Kit TO20 TO30 Massey Ferguson TO20 TO30
Clutch Kit TO20 TO30 Massey Ferguson TO20 TO30
$152.05
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Lower Steering Arm  Massey Ferguson 30 31 165 175 3165 534155M91
Lower Steering Arm Massey Ferguson 30 31 165 175 3165 534155M91
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Clamshell Manifold Clamp Ford 9N 2N 8N Massey Ferguson TO20 TO30 TO35
Clamshell Manifold Clamp Ford 9N 2N 8N Massey Ferguson TO20 TO30 TO35
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Carburetor Kit Massey Ferguson TE20TO20 TO30 TO35 20 30 35 50 135 150
Carburetor Kit Massey Ferguson TE20TO20 TO30 TO35 20 30 35 50 135 150
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Radiator Massey Ferguson 20 30 40 40 40 240 250 1680547M92
Radiator Massey Ferguson 20 30 40 40 40 240 250 1680547M92
$191.65
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Grille Massey Ferguson 30 31 150 165 175 3165 506319M93
Grille Massey Ferguson 30 31 150 165 175 3165 506319M93
$65.42
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Spindle Right or Left Massey Ferguson 30 31 3165 514572M92
Spindle Right or Left Massey Ferguson 30 31 3165 514572M92
$175.75
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Grille Door  Massey Ferguson 30 31 150 165 175 180 1080 3165 194181M91
Grille Door Massey Ferguson 30 31 150 165 175 180 1080 3165 194181M91
$31.74
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Carburetor Massey Ferguson TE20 TO20 TO30 181644M91
Carburetor Massey Ferguson TE20 TO20 TO30 181644M91
$192.47
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Steering ShaftUK Built  Massey Ferguson 20 30 230 231 240 250 1890727M91
Steering ShaftUK Built Massey Ferguson 20 30 230 231 240 250 1890727M91
$58.62
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Brake Slave Cylinder Massey Ferguson 25 30 50 270 298 670 690 698 699
Brake Slave Cylinder Massey Ferguson 25 30 50 270 298 670 690 698 699
$44.60
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Fan Belt Massey Ferguson TE20 TO20 TO30 181636M1
Fan Belt Massey Ferguson TE20 TO20 TO30 181636M1
$11.05
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Oil Pressure Gauge Massey Ferguson TE20 TO20 TO30 TO36
Oil Pressure Gauge Massey Ferguson TE20 TO20 TO30 TO36
$9.39
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Major Engine Kit Massey Ferguson Continental Z129 Gas TO30
Major Engine Kit Massey Ferguson Continental Z129 Gas TO30
$454.00
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Water Pump Pulley Ferguson Massey Ferguson TE20 TO20 TO30 1750300M1
$37.08
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Major Engine Kit Massey Ferguson PER203DM 30 65 165
Major Engine Kit Massey Ferguson PER203DM 30 65 165
$391.00
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Distributor Massey Ferguson 35 50 TO20 TO30 TO35 181685M91 182852M91
Distributor Massey Ferguson 35 50 TO20 TO30 TO35 181685M91 182852M91
$275.00
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Water Pump Pulley Massey Ferguson 30 165 175 180 255 265 6500 737636M1
$102.48
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New Bucket Seat Black Vinyl Massey Ferguson 20F 30E
New Bucket Seat Black Vinyl Massey Ferguson 20F 30E
$190.00
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Carburetor Reman Massey Ferguson TO20 TO30  Marvel Schebler TSX458
Carburetor Reman Massey Ferguson TO20 TO30 Marvel Schebler TSX458
$250.00
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Carburetor Reman Massey Ferguson TO30 TO35 35 50 Carter UT
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Carburetor Reman Massey Ferguson TO30 TO35 35 50 Carter number UT
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Tachometer Massey Ferguson 20 30 40 50 231 240 250 255 298
Tachometer Massey Ferguson 20 30 40 50 231 240 250 255 298
$18.80
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Tachometer Cable Massey Ferguson 20 30 245 579627M91
$21.92
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Electronic Ignition Kit Massey Ferguson 265 285 2135 2200 2220 2500 3165 20 30
Electronic Ignition Kit Massey Ferguson 265 285 2135 2200 2220 2500 3165 20 30
$103.00
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Tachometer Cable Massey Ferguson 65 TO20 TO30 506334M91
Tachometer Cable Massey Ferguson 65 TO20 TO30 506334M91
$20.55
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181052M1 New Massey Ferguson Hydraulic Draft Control Plunger MF TE20 TO20 TO30 +
181052M1 New Massey Ferguson Hydraulic Draft Control Plunger MF TE20 TO20 TO30 +
$28.18
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180291M1 New Massey Ferguson Diesel Radiator TO30 135 203 205 35UK 35 18732M91
180291M1 New Massey Ferguson Diesel Radiator TO30 135 203 205 35UK 35 18732M91
$182.74
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FERGUSON STARTER 6 VOLT 6 VOLT 181541M91 TO20 TO30 TO35  SN200001
FERGUSON STARTER 6 VOLT 6 VOLT 181541M91 TO20 TO30 TO35 SN200001
$198.00
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HYDRAULIC LIFT PISTON SEAL KIT FERGUSON TE20 TO20 TO30
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MASSEY FERGUSON 165 175 MF 30 MF 31 MF 3165 RIGHT SIDE PANEL 194941M91
MASSEY FERGUSON 165 175 MF 30 MF 31 MF 3165 RIGHT SIDE PANEL 194941M91
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MASSEY FERGUSON 165 175 MF 30 MF 31 LEFT SIDE PANEL 3165 194942M91
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Ferguson 20 30 Ford 8n 9n 2n manuals 3 pt planter
Ferguson 20 30 Ford 8n 9n 2n manuals 3 pt planter
$10.00
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Ferguson Tractor TO20 TO30 BUTTON STARTER SWITCH 181679M91 20A1748
Ferguson Tractor TO20 TO30 BUTTON STARTER SWITCH 181679M91 20A1748
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181679M1 New Massey Ferguson MF Starter Switch TE20 TEA20 TO20 TO30 TO35
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LCRK2030 New Massey Ferguson Lift Cover Repair Kit TE20 TO20 TO30 MF Tractor
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736218M1 New Massey Ferguson Tractor 3 Cyl DSL Exhaust Manifold 165 30 3165
736218M1 New Massey Ferguson Tractor 3 Cyl DSL Exhaust Manifold 165 30 3165
$95.86
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New Massey Ferguson Tractor MPH Tachometer 165UK 175UK 178 168 185 188 50 165 +
New Massey Ferguson Tractor MPH Tachometer 165UK 175UK 178 168 185 188 50 165 +
$37.99
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7311174M1 New Massey Ferguson Tractor Radiator Hose Inlet 165 255 3165 30 50 65+
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$8.97
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New Massey Ferguson Tractor Hood Decal Kit 383
New Massey Ferguson Tractor Hood Decal Kit 383
$58.99
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New Massey Ferguson Tractor Radiator Cap 550 590 30H 40E 50E 230 231 240 250 +
New Massey Ferguson Tractor Radiator Cap 550 590 30H 40E 50E 230 231 240 250 +
$6.60
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New Massey Ferguson Seat Pan Cushion Kit TE20 TEA20 TO20 TO30 TO35 F40 MH50 +
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$127.81
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1678868M92 New Massey Ferguson Tractor Left Hand Rear Light 20F 30E 40E 50E +
1678868M92 New Massey Ferguson Tractor Left Hand Rear Light 20F 30E 40E 50E +
$19.17
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1035335M91 New Massey Ferguson Tractor Starter Drive TO20 TO30 TO35 1750454M91
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3476714M91 New Massey Ferguson Regulator 20F 25 253 263 283 283 Brazil 30E 360 +
3476714M91 New Massey Ferguson Regulator 20F 25 253 263 283 283 Brazil 30E 360 +
$30.76
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1678869M92 New Massey Ferguson Tractor RH Rear Light 20F 30E 40E 50E 230 240 +
1678869M92 New Massey Ferguson Tractor RH Rear Light 20F 30E 40E 50E 230 240 +
$19.17
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544435M4 New Massey Ferguson Tractor Left Hand LH Steering Arm 230 245
$81.99
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