Vintage Becker Radio Speaker Shielded Cable

[BobCananda]

The speakers for my Becker radio have a copper braided shield that is grounded to the chassis of the rear speakers. However, a previous owner installed an aftermarket radio and butchered the speaker connections at the radio.

Any idea what the copper braided wire should be connected to at the radio end?

 

[1aespinoza]

Any idea what the copper braided wire should be connected to at the radio end?

I would assume the radio chassis. The speaker chassis are screwed onto the car door making them ground contact, so the radio side should be the same.

 

[BobCananda]

I would assume the radio chassis. The speaker chassis are screwed onto the car door making them ground contact, so the radio side should be the same.

I should have mentioned that the cable had red (positive) and clear (negative) wires connected directly to the speaker spade terminals.

 

[1aespinoza]

I should have mentioned that the cable had red (positive) and clear (negative) wires connected directly to the speaker spade terminals.

So it has Positive, Negative, and the Braided sleeve on the speaker side. Pos and Neg are connected to the voice coil while Braided is connected to the speaker chassis. If that is correct, then the braided could go connected to the radio chassis as well. It is to give EMF noise a direct path to ground, so direct chassis contact is the common practice.

 

[BobCananda]

Thanks for your input. I'm trying to make sure I do the wiring correctly during the restoration of my 1971 Maserati ghibli SS.