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Old 12-22-2023, 01:15 PM #1
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Installing/Swapping New OEM Engine Fuse/Relay Box

I bought a used OEM engine relay/fuse box due to rear defog not working, but having a hard time finding details on the swap. I've found plenty info on acc fuse/relay installations but nothing on OEM replacement. Any help out there?
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Old 12-22-2023, 04:23 PM #2
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Quote:
Originally Posted by john_brandon View Post
I bought a used OEM engine relay/fuse box due to rear defog not working, but having a hard time finding details on the swap. I've found plenty info on acc fuse/relay installations but nothing on OEM replacement. Any help out there?
Are you sure it's the relay box and not the wires that go from the body to the hatch in the rear? That's normally the culprit when something in the hatch stops working.
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Old 12-22-2023, 08:07 PM #3
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Quote:
Originally Posted by RodrickHeffley View Post
Are you sure it's the relay box and not the wires that go from the body to the hatch in the rear? That's normally the culprit when something in the hatch stops working.
The rear wire harness is all good. Everything else in the rear works - window, lock, wiper. Checked the defog connections with the window, again all good. Heated mirrors also work, fuse for defogger is good but thereís no resistance at the defog relay. Iíve chased this problem for past two winters. Gotta be an issue in the box. Iím open to other ideas.
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