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IH 424 wiring diagram

A

Anonymous-0

Well-known Member
I am trying to get everything working on my 424. I just finished the hydraulics and oil changes and now want to work on the electrical stuff. The headlights don"t work and the wiring diagram that I have in the Intertech book does not indicate headlights or headlight switch. I am sure this is a factory equipped 424 since the headlights are integrated into the grill assembly and the headlight switch is part of the dash assembly. I was hoping to review a wiring diagram before I tore into it. Can anyone help me out on this one. Thanks.
 
Hi Steve, never worked on 424 but worked on 434.
Does the hood on 424 tip forward for servicing by removing some bolts by the dash and one bolt in the front behind the grill? If it does there was one ground wire for the headlights that was connected to the stud behind the grill that bolted into the front bolster casting. Often the lug got broken on this wire and the head lights would not work.

Hope this helps
JimB
 
Hi Steve, looked at electrical diagram at caseih.com parts 424 and the hood doesn't tilt like 434 but has the same single ground wire for head lights. From parts:
Item 4 388825R91 CABLE/Retired CABLE ASSY, head light ground, units B, D, E & F.

JimB
 
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