I have a John Deere Z445 zero turn mower and I can't get a wiring diagram anywhere. I called John Deere and they want to charge me. I am really in trouble because I need the mower for my business. I want to fix it myself but I don't have a diagram. Please help. If you can fax the 4 pages over to me or help me with another solution, please contact me. Thanks.

Hi,
Firstly that is not a commercial mower, though the engine is. Secondly, yes Deere wants to sell the service manal but the parts look-up is free. Just go to John Deere Home Page Redirect (http://www.deere.com) then Residential and choose Service and Support then Parts. Type in Z445 and there you have it.
That said there are two serial number breaks for the electrical system. I will attach the pictire of the harness used until 40000.
John Deere - Parts Catalog
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Catalog: 9595 | Grid: C1 | Section: 40 | Page: 4
Catalog Name: Z445 EZTrak Residential Zero Turn Mower (Worldwide Edition)
Page Name: WIRING HARNESS (SN -040000)


KEY PART NO. PART NAME QTY SERIAL NO. REMARKS
1 57M9480 CONNECTOR 1 HOUR METER
2 57M9482 CONNECTOR 1 IGNITION SWITCH
3 M117518 CONNECTOR 1 PTO SWITCH
4 Z40696 CONNECTOR 1 HEADLIGHT
5 AM135987 WIRING HARNESS 1 MAIN
6 RETAINER 4
7 FUSE HOLDER 1
8 57M7120 FUSE 2 20 AMP
9 99M7064 FUSE 1 7.5 AMP
10 37M7089 SCREW 2 M6 X 12
KEY PART NO. PART NAME QTY SERIAL NO. REMARKS
11 RETAINER 1
12 M90206 CONNECTOR 1 LH NEUTRAL SWITCH
13 57M7974 CONNECTOR 1 SEAT SWITCH
14 RETAINER 3
15 57M9364 CONNECTOR 1 ENGINE HARNESS
16 EYELET 1 GROUND
17 T28586 CONNECTOR 1 CLUTCH
18 M90206 CONNECTOR 1 RH NEUTRAL SWITCH
19 EYELET 1 BATTERY +
M95539 BOOT 1
KEY PART NO. PART NAME QTY SERIAL NO. REMARKS
20 EYELET 1 SOLENOID B+
M135512 BOOT 1
21 T28583 CONNECTOR 1 SOLENOID (-)
22 T28583 CONNECTOR 1 SOLENOID (+)
23 57M9362 CONNECTOR 1 RELAY
24 AT75769 RELAY 1 (SUB FOR AM106305)
25 M90206 CONNECTOR 1 BRAKE SWITCH