Te20 generator and alternator wiring diagrams

TEA 20 WIRING DIAGRAM - ORIGINALLY POSITIVE EARTH Spark Plugs firing order 1-3-4-2 #1 cylinder is at the front 1 2 3 4

GENERATOR

D E A F

GENERATOR CONTROL BOX (REGULATOR)

GENERATOR WARNING LAMP

F D

DISTRIBUTER

AMMETER

-

-

+

Fuse 15A

+

IGNITION SWITCH

LIGHT SWITCH STARTER SOLENOID STARTER

BATTERY

-

+

Positive Earth

COIL HEAD LIGHTS

TAIL LIGHTS To polarizer the Generator to suite the polarity, remove the F & D leads from the Generator and with a lead connected to the Negative terminal of the battery, flash the Field “F” terminal on the generator til you see a small spark, then replace the leads in the same position.

NOTE! The Generator must be attached to the chassis and Battery connected to maintain the polarity.

Any break in the system will require the process to be repeated.

TEA 20 WIRING DIAGRAM - for TRACTORS CONVERTED TO NEGATIVE EARTH Spark Plugs firing order 1-3-4-2 #1 cylinder is at the front 1 2 3 4

GENERATOR

D E A F

GENERATOR CONTROL BOX (REGULATOR)

GENERATOR WARNING LAMP

F D

DISTRIBUTER

AMMETER

+

-

Fuse 15A

-

+

IGNITION SWITCH

LIGHT SWITCH STARTER SOLENOID STARTER

COIL

BATTERY

+

-

HEAD LIGHTS

Negative Earth TAIL LIGHTS To polarizer the Generator to suite the polarity, remove the F & D leads from the Generator and with a lead connected to the Positive terminal of the battery, flash the Field “F” terminal on the generator til you see a small spark, then replace the leads in the same position.

NOTE! The Generator must be attached to the chassis and Battery connected to maintain the polarity.

Any break in the system will require the process to be repeated.

When and How to Polarize a Generator Polarization is a procedure which matches the polarity for the generator and the voltage regulator by permitting a surge of current to flow through the generator, correctly polarizing it. Damage to electrical components can occur if polarities do not match.

Ferguson tractors have utilized both positive and negative ground systems.

Delco 6V systems have positive ( + ) ground.

Delco 12 V systems have negative ( - ) ground.

Lucas systems for both 6V and 12V models have positive ( + ) ground.

Lucas systems converted to electronic distributer with a 12V system have negative ( - ) ground.

Polarization of the generator should take place whenever any of the following events occur:  

1. The battery is replaced or disconnected from the tractor 2. The generator is replaced or serviced 3. The regulator is replaced or serviced

If any of these events occurred, do not start the engine until polarization is done.

The polarity of the generator must be set to match that of the voltage regulator.

For positive ground systems: To polarizer the Generator to suite the polarity, remove the F & D leads from the Generator and with a lead connected to the Negative terminal of the battery, flash the Field “F” terminal on the generator til you see a small blue spark, then replace the leads in the same position as they were before.

For negative ground systems: To polarizer the Generator to suite the polarity, remove the F & D leads from the Generator and with a lead connected to the Positive terminal of the battery, flash the Field “F” terminal on the generator til you see a small blue spark, then replace the leads in the same position as they were before.

NOTE! The Generator and Battery Earth must be attached to the chassis to maintain the polarity.

Any break in the system (i.e. battery or generator removed or regulator wiring disconnected) will require the process to be repeated.

TEA 20 WIRING DIAGRAM - NEGATIVE EARTH

ALTERNATOR

Spark Plugs ямБring order 1-3-4-2 #1 cylinder is at the front 1 2 3 4

ALTERNATOR WARNING LAMP

GENERATOR CONTROL BOX (REGULATOR)

Ind Bat

REGULATOR NOT REQUIRED

DISTRIBUTER

AMMETER

+

-

Fuse 15A

-

+

IGNITION SWITCH

LIGHT SWITCH STARTER SOLENOID STARTER

COIL

BATTERY

+

-

Negative Earth The Alternator requires no Polarization process

HEAD LIGHTS

TAIL LIGHTS

Ferguson TEA20 Tractor with a Generator 12V Positive earth system plus Ammeter wiring explained Yellow

D F

Note! If no Ammeter, wire directly from A on Regulator to the starter switch as shown

2

3

4

Yellow Green Strip

A

Green

1

E

F

Charge Indicator

Fuse 15A

White

D

May also be grounded Black at starter switch

GENERATOR CONTROL BOX (REGULATOR)

Yellow

Circuit for accessories if required

White

Ground return from accessories, if required.

Ammeter

Yellow Green Strip

Keyed Ignition Switch

Terminate on the “-” battery terminal or any where on the chassis i.e. the ground bolt on the starter switch

ON/OFF

+

Red Black

+

-

-

Yellow Green Strip

DISTRIBUTOR Firing seq. 1-3-4-2 (Cilinder #1 at front of moter

12V Battery

LUCAS

COIL 12V

Firing order 1-3-4-2 #1 cylinder is at the front

+

STARTER MOTOR LUCAS 25079J

Negative Earth Can be grounded to the chassis at the Oil Filler Casting or the mounting bolts on the starter motor or one of the steering housing bolts.

Anywhere will do so long as there is a good earth connection.

To polarizer the Generator to suite the polarity, remove the F & D leads from the Generator and with a lead connected to the Negative terminal of the battery, flash the Field “F” terminal on the generator til you see a small spark, then replace the leads in the same position as before.

NOTE! The Generator must be attached to the chassis and Battery connected to maintain the polarity.

Any break in the system will require the process to be repeated.

Ferguson TEA20 Tractor with a Generator 12V Negative earth system Yellow

D

E

Green

F

Note! If no Ammeter, wire directly from A on Regulator to the starter switch as shown

Yellow Green Strip

A

+ Ammeter

F

Charge Indicator

Fuse 15A

White

D

May also be grounded Black at starter switch

GENERATOR CONTROL BOX (REGULATOR)

Yellow

Circuit for accessories if required

White Yellow Green Strip

Ground return from accessories, if required.

Keyed Ignition Switch

Terminate on the “-” battery terminal or any where on the chassis i.e. the ground bolt on the starter switch

ON/OFF

3

4

Red Black

-

+

Yellow Green Strip

DISTRIBUTOR Firing seq. 1-3-4-2 (Cilinder #1 at front of moter

12V Battery

LUCAS

COIL 12V

-

2

+

1

STARTER MOTOR LUCAS 25079J

Negative Earth

Firing order 1-3-4-2 #1 cylinder is at the front

Can be grounded to the chassis at the Oil Filler Casting or the mounting bolts on the starter motor or one of the steering housing bolts.

Anywhere will do so long as there is a good earth connection.

To polarizer the Generator to suite the polarity, remove the F & D leads from the Generator and with a lead connected to the Positive terminal of the battery, flash the Field “F” terminal on the generator til you see a small spark, then replace the leads in the same position as before.

NOTE! The Generator must be attached to the chassis and Battery connected to maintain the polarity.

Any break in the system will require the process to be repeated.

This is the colour coding of the harness that I purchased all going well, this maybe a standard colour coding used in Australia.

NOTE! The harness did not have the wires in the appropriate place for the ammeter, hence the comment at the Ammeter** Generator

“F” small lug green to “F” on regulator “D” large lug yellow to “D” to charge light then extended to “D” on regulator

Charge light

white to ignition switch yellow from “D” on generator then extended to “D” on regulator

Regulator

“F” green from generator “A” yellow with green stripe to positive side of starter switch “E” black to earth “D” yellow from generator via charge light

Ignition Switch

white from charge light then to + on coil for negative earth or - on coil for positive earth yellow with green stripe to positive side of starter switch

Coil

white to ignition switch

Ammeter

cut the yellow with a green stripe wire in an appropriate place, connect the end of the cut wire from the regulator to the + side of the ammeter and the other end to the - side of the ammeter (i.e. “A” on regulator to “+” on ammeter then “-” on ammeter to battery side of starter switch Note!** you will need to add wire to extend to the ammeter

Distributer

some distributers have 2 wires 1 red and 1 black. connect the black to “-” on coil and red to “+” on coil.

Alternator conversion kit B8810 from Bare-Co Note! Tractor must be Converted to Negative earth system Alternator Regulator Charge light

disconnect (cut back & tape up) all wires from the generator.......................... disconnect (cut back & tape up) all wires from the regulator........................... these wires are now NOT required disconnect (cut back & tape up) original yellow wire(s) on the charge light.

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New Harness connect red wire with large spade terminal to “B+ on alternator, other end to battery “+” or if fitted, ammeter “+” ((another red wire is then required (not supplied) to run from ammeter - to battery +)) connect new yellow wire with small spade terminal to “D+” on alternator and terminate on charge light in place of the original yellow wire(s) Job Done.

Disclaimer: While I have done my best to ensure acsuracy on these eight pages, no responsibility is accepted for errors or omissions of information

Ferguson TEA20 Tractor with an Alternator 12V Negative earth system E

Bat

A

New Yellow as provided in Alternator Harness D+

F

Charge Indicator

Fuse 15A

White

D

GENERATOR CONTROL BOX (REGULATOR)

Red Alternator

Circuit for accessories if required

White

Ground return from accessories, if required.

No Ammeter

+

2

3

4

+

see

-

DISTRIBUTOR

12V Battery

LUCAS

COIL 12V

-

Firing seq. 1-3-4-2 (Cilinder #1 at front of moter

ON/OFF

note

Red continued

Red Black

Keyed Ignition Switch

1

1

wire directly from Ammeter “B” on Alternator to the Positive Battery Terminal. Otherwise add a new wire (red) from the - on the ammeter to the Positive Battery Terminal

Yellow Green Stripe

+

Note! If no Ammeter,

STARTER MOTOR LUCAS 25079J

Negative Earth (Some tractors have the Battery Grounded to the chassis at the Oil Filler Casting some to one of the mounting bolts on the starter motor )

The Alternator requies no Polarization process.

Note 1: this wire can also be terminated at the battery “+” terminal instead of the battery side of the starter switch

Terminate on the “-” battery terminal or any where on the chassis i.e. the ground bolt on the starter switch