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M931a2

Glen Grenon

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Cedar Ridge, Ca.
I have a 1990 M931A2, serial# 3103179. I'm in need of a wiring schematic. Water got into part of the 63 pin coupler on the right side of the rig under the dash. It burnt one wire that I know of and now the e-brake won't release. The number on the wire is 3A. I could use some help!
 

simp5782

Feo, Fuerte y Formal
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I have a 1990 M931A2, serial# 3103179. I'm in need of a wiring schematic. Water got into part of the 63 pin coupler on the right side of the rig under the dash. It burnt one wire that I know of and now the e-brake won't release. The number on the wire is 3A. I could use some help!
E brake has nothing to do with the wires. Unless you mean the buzzer wont quit buzzing
 

Glen Grenon

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Cedar Ridge, Ca.
Thanks for the reply. No, the buzzer shuts off when its released. Did you send the wiring schematic ? If so thank you very much! I've been working on tractors most of my life but this is a different beast. Did they use fusible links instead of fuses? The way that wire burnt was just like a fusible link. The problem may lie else where. The brake issue only started after that wire burnt and I noticed that 3A wire goes to the alternator which my have grounded to the pin housing. I really appreciate your help. Thank you!
 

Andyrv6av8r

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If you are referring to the park brake by the seat, it has a cable going underneath to the mechanical brake. The air switch under the handle works the air park brakes. There are no electrics involved, as Wes said.
 
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