Stereo

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Knowfish

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Location
Central Wyoming
First Name
Kevin
Truck Year
1978GMC
Truck Model
K1500
Engine Size
400
I need help with this please I think I have the amp right and the power but the rest of it is Latin.
I have 2 speakers behind the seat and 1 off the amp.
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Ricko1966

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kansas
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Rick
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1975
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c20
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Head unit Grey and white are front speakers,purple and green rears. Black stripes are speaker negatives.red is keyed power,yellow is constant power,blue is the amp trigger black is ground. I have no idea about tge rest of that mess.more and better pics maybe would help. I have no idea what you've connected to where on that amp.
 

Knowfish

Junior Member
Joined
Apr 25, 2025
Posts
2
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Location
Central Wyoming
First Name
Kevin
Truck Year
1978GMC
Truck Model
K1500
Engine Size
400
Thanks for answering, I will take pictures of the amp with the connections I have.
I totally agree on the mess
What would you like for pictures on the other wiring
I don't get what the black box is.
The yellow is on constant the red on keyed and the ground is on buss bar. The red wire is on 12 vote. Power goes right to the battery, the little wire says remote and is hooked to the blue with white stripe. Wire coming out of the plug. That plugs in to the stereo.
The black wire is ground and I grounded it to the cab.
The 2 blue speaker wires are hooked to write, channel and le
ft, channel, negative and positive. And they go to the big speaker in the back.
The other end of the amp has just two wires line input left channel right channel
The second photo is of
Where the remote wire attaches to the harness
The last photo is the speaker wires to the 2 speakers behind the seat.
I hope this helps, and honestly, I really appreciate this
 

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YakkoWarner

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Location
Central Texas
First Name
Wolf
Truck Year
1989
Truck Model
R2500 Suburban
Engine Size
454
My suspicion is that he little black box with the red/yellow/black(or brown hard to tell in photo) wires going in and out is a form of either short-term rechargable battery or a capacitor, the intent being that you don't lose the clock/programmed stations/EQ settings/etc if you disconnect the truck's battery for a short period of time. I had a Kenwood head unit with that once, it was a cool idea but then the whole unit failed for other reasons.
 

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