multispace sound system upgrade

[raindog]

I was getting a bit sick of the tinny horrible factory speakers in my mk1 multispace, I bought a pair of 4" pioneer 2 way for the back and a pair of 6.5" Alpine sxe two way for up front... got them cheap too

The thing I was wondering is, which wires are +/ -? in the back there are orange and purple, in the front are white and beige...

Is anyone able to shed some light on this one?

I really don't know! cratch:

[MudFT]

Simple way to check is to use a multimeter.
However, doesn't matter as long as all speakers are wired the same.
If you wire incorrectly (out of phase) the poor sound quality will be obvious.