Car / Auto wiring help ALUMINUM to COPPER (cu)

So i have a car stereo with Aluminum wires, but my car has copper CU
so is there an adapter of some sort to connect ALUMINUM ( Al ) to Copper ( Cu )?
Dual car stereo came with this Al wires
thanks
Answer #1
so is there an adapter of some sort
not that I know of
you just connect them with wire nuts and/or solder
Answer #2
Just use some krimp connectors because al wires break easily
Answer #3
Connecting dissimilar metals can cause corrosion, higher resistance (heat), and audible distortion in speaker wire.
Using special twist connectors is the easiest way to prevent problems such as the IDEAL brand AL/CU connector.
http://www.idealindustries.com/products/wire_termination/twist-on/twister_al-cu.jsp
Answer #4
I kind of doubt that they are aluminum since aluminum has very poor conductive properties when it comes to metals. More than likely the wires are just pre-coated in solder for you on the ends or it’s low grade silver. The copper and silver are very close in resistance and really only serve to better help mark which is ground and which is positive. Although if I’m remembering correctly, silver does have slightly less resistance which translates to better electron flow. The difference though is so minimal that it doesn’t really make any performance difference.
Answer #5
aluminum has very poor conductive properties
in the US they used aluminum wire in houses for a while
the main reason they stopped using it was that aluminum expands and contracts more than copper so screw connections could loosen, not because of conductivity
copper is a better conductor but there are many electrical transmission lines for power distribution that are aluminum
I’m guessing that the weight & span of those lines make aluminum better suited for this use
Answer #6
As shown in the chart, aluminum is quite a reasonable conductor so it can be used to reduce weight .
Used in airplanes due to it’s better weight to conductance ratio than copper.
http://en.wikipedia.org/wiki/Electrical_resistivity_and_conductivity
A good twist on connector or high pressure crimp would be best for joining.
Answer #7
crimp
these are not good to use with aluminum as it can shrink out of them
A good twist on connector
I call these “wire nuts” and these are good because they twist the wire into a pig-tail during install
Answer #8
edwoodweb replied: aluminum has very poor conductive properties
in the US they used aluminum wire in houses for a while
the main reason they stopped using it was that aluminum expands and contracts more than copper so screw connections could loosen, not because of conductivity
copper is a better conductor but there are many electrical transmission lines for power distribution that are aluminum
I'm guessing that the weight & span of those lines make aluminum better suited for this use
My apologies, in some applications such as houses and even airplanes as Nel said it would have been used.
Since he was referring to his car radio. I was relying on my 10 years as a driveability tech at a Ford Dealership and 7 years at my family repair shop to answer his question. Never once have I seen aluminum wiring used in an automobile. That’s why I said I doubted his car radio wiring was aluminum and it won’t be aluminum unless someone has specifically gotten a hold of some to use with the radio.