What is this?
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Mountain Pass
Joined: May 2013
Posts: 110
Likes: 5
From: Memphis, TN
What is this?
Give me some help if you can - what is this object?
I found it laying on a brace on top of the steering column near the firewall, under the dash. I was attempting to straighten out the NIGHTMARE of wiring a previous owner did. The splices connected to it broke way as I was moving wire, so I have no idea where they went. The wires were connected by small pigtails.
It is about 3" X 2" - the wires are red, blue & black. There is not part number that I can find on it.
Is it part of the vehicle or part of the radio?
Thanks for any info.
CB3
Logistics Pro
Joined: Jul 2005
Posts: 4,217
Likes: 154
There's tangs/tabs holding the cover on.
It doesn't look like anything I've ever found in an old Ford, so I'm going to guess that it's for an aftermarket stereo or alarm or something. Might even be to one of those breathalyzer-interlock rigs or an old cellular phone or something...
How about a trailer brake? Whatever it is is at least kind of old since the case is metal.
It doesn't look like anything I've ever found in an old Ford, so I'm going to guess that it's for an aftermarket stereo or alarm or something. Might even be to one of those breathalyzer-interlock rigs or an old cellular phone or something...
How about a trailer brake? Whatever it is is at least kind of old since the case is metal.
More Turbo
Joined: Aug 2017
Posts: 604
Likes: 154
From: NJ
That is one of those experimental tracking devices the US Government was installing in the 70`s to track fuel consumption during the fuel crisis. Naw just kiddin but sounded probable.... My guess would be a relay for some aftermarket accessories
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Senior User
Joined: Dec 2017
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I'm thinking voltage regulator, blue wire is probably the 5 V source for the stereo that was in the truck.
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Logistics Pro
Joined: Jul 2005
Posts: 4,217
Likes: 154
Thinking about it again, I guess a relay can have just three wires if the case is metal and can be a ground for the primary circuit. Case in point: Horn relays, they only have three terminals.
Fleet Mechanic
Joined: Sep 2014
Posts: 1,626
Likes: 78
From: NE Texas
Does not look like radio suppressor, they usually did not have three wires. They normally either looked like an electrical coil (two wires) to be hooked onto the power wire, one wire when it was wired to the coil and grounded, or possibly a filter to go on the antenna wire. If it does not seem to affect anything, just leave it off. Don't recall seeing 5V in a truck for a stereo, usually you have switched 12V+ and constant 12V+, no 5V.
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Mountain Pass
Joined: May 2013
Posts: 110
Likes: 5
From: Memphis, TN
Thanks. I took off the cover and inside was some sort of coil and and a few capacitors?/diodes?. I've checked everything else - heater blower, lights, etc., and all seem to be functioning.
