I just bought a Caliber mcd 550m brand new from a shop £100,
a what ?...you say.......well its got everything most of the other cd/mp3 head units have including motorized front so that aint a bad price.
Problem is when I hook up the iso block I get nothing !
I read Lukes guide and think I have to switch wires around....when both blocks face each other as if connected battery and ground line up but antenna and ACC+ are on opposite sides could this be my problem?

Joined red and yellow.......think thats sorted it thanks for.....well...err...
thanks.