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  #1  
Old 05-24-2025, 07:44 PM
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Join Date: May 2020
Location: Interior Alaska
Posts: 154
What is this black box under the dash?

When I took off the dash panel under the steering column, I found this silvery "black box." What in the world is this? I thought this machine was old enough to be non-electronic!
What is this black box under the dash?-black.box.t.jpg
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'75 John Deere 450C (times 2)
'83 240D plus parts car
'87 F350, 6.9L IDI
'89 F350 crewcab, 7.3L IDI
'89 F-Superduty, 7.3L IDI
'91 F-250, 7.3L IDI
'91 F-350, 7.3L IDI
'94 F-350 Crewcab, 7.3L IDI
'94 E-350 Ambulance, 7.3L IDI
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  #2  
Old 05-24-2025, 10:00 PM
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Join Date: May 2009
Location: Sacramento, CA
Posts: 733
That's your cruise control amplifier.
They can go bad due to old capacitors and it's a fairly easy fix.


Jeff
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1984 300SD 300,000 miles--two tank WVO setup
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  #3  
Old 05-24-2025, 10:56 PM
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Join Date: May 2020
Location: Interior Alaska
Posts: 154
Huh. The cruise control lever is dangling uselessly on the steering column, and since I really hate tearing into the steering column on anything, I've ignored it since I got the car. Who knows, it likely works if I fixed the lever.

Thanks.
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'75 John Deere 450C (times 2)
'83 240D plus parts car
'87 F350, 6.9L IDI
'89 F350 crewcab, 7.3L IDI
'89 F-Superduty, 7.3L IDI
'91 F-250, 7.3L IDI
'91 F-350, 7.3L IDI
'94 F-350 Crewcab, 7.3L IDI
'94 E-350 Ambulance, 7.3L IDI
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  #4  
Old 05-25-2025, 07:38 AM
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Join Date: Sep 2001
Posts: 3,379
Cruise stalk isn't difficult, it is external to the column. An easy to work on component.
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