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1978 fuse panel diagram

 
Old 06-10-2018, 08:29 PM
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DB Cooper
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Default 1978 fuse panel diagram

Anyone have a reference photo for the fuse locations on a 78 ? Most of the lettering is gone on mine, and I don't see a reference in the usual locations (AIM, shop manual, wiring diagram, etc). I'm pretty sure the wiper circuit shouldn't work with the key off, should it ?
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Old 06-10-2018, 09:00 PM
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biackbenz
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Originally Posted by DB Cooper View Post
Anyone have a reference photo for the fuse locations on a 78 ? Most of the lettering is gone on mine, and I don't see a reference in the usual locations (AIM, shop manual, wiring diagram, etc). I'm pretty sure the wiper circuit shouldn't work with the key off, should it ?
I have one in my owners manual. I will scan it tomorrow and send kit to you or post a PDF here.

My wipers do not operate with the key off.
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Old 06-10-2018, 09:28 PM
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DB Cooper
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Thanks. And yeah, I was half kidding about the key off. The one diagram I found for a 78 in a shop manual showed the wiper in the lower left, which is hot with the key off. I'm trying to chase down why I intermittently lose +12v to the white wire in the middle of the abc connector on the wiper motor, newly determined after driving 50 miles home on the freeway last night in light rain, with the wipers sitting in mid stroke where they stopped for no apparent reason.

And yes, I have rebuilt the switch and the wiper motor,, bench tested both, and confirmed when the wipers quit, it loses +12 to that center pin. Jumping that pin to +12 makes them work. Rather than pull the fusebox off the firewall to hunt down the bad wire, I spliced into the plug to the wiper and fed another white wire through the firewall. Looking to tuck it in with the correct fuse location and call it "Bubba'ed" lol

Last edited by DB Cooper; 06-10-2018 at 09:29 PM.
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Old 06-11-2018, 07:32 PM
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Old 06-11-2018, 08:24 PM
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Thanks man !
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