I did say it can be a bit of a challenge. Unlike modern cars which sometimes have a ready multi-wire plug, as people have described, the classic Mini may require you to do wiring back to power source and the job could extend as far as upgrading the alternator. Lucky you are buying a 1979 Mini - it has an alternator. Older cars (pre 1975 or 1976) have generators!

might get the 70 AMP alternator  . btw same as FORD TRACTOR. and you can buy locally , where ever you are on planet earth.   later bc

To add -Miniforumuk has a whole section on "ICE" for your mini. Check it out. 

Not really that much of an issue...  Your sound device (mine did anyway) should (may?) come with installation instructions.  This will identify the wire that needs to be connected to continuous power (to maintain the various memories) and that which is switched.. I ran that one to a toggle switch rather than use the ignition.  That way I can play the radio without having the ignition on (which might upset the ignition system if left on without the engine running).

The instructions should also tell you the required power rating for the wires..

I bought a unit with a remote control which (IMH0) is a really good idea... That way I could mount the radio in front of the passenger and still easily control it.. 

Cheers, Ian

Plenty of YT videos to surf through as well.  I have spent quite a few hours watching a VW getting audio by soundmanCA (amplified).  If you can get through the cursing and annoying jokes, it is very well put together content.  I am not sure if old VWs have the same power issue though. 

Wiring it up can be a bit challenging. Old school Minis just had a single power source for a radio, controlled by the ignition switch. Modern systems usually need 2 power feeds - one controlled by the ignition switch and one to provide continuous power to retain digital settings. Modern systems also create a heavier load than the wiring from the ignition switch can handle, so the wiring needs to be substantial and fused.

No diffent than any other older car, you'll have to find a place to put though but there are many after market radio mounts avaiable

Hey Everyone,

I am in the process of buying my very first Austin Mini 1000
One of the first things i want to do with it is install an aftermarket sound system that has Apple Car Play.
How is this possible? Is it possible?

Its a 1979 Austin Mini 1000.
998cc engine.