headunit wiring

[Ad-mk2Ibiza]

ive had 2 sony xplod units in my mk2 ibiza so far but ive decided to finally get round to wiring it properly....
basically it looses memory everytime the ignition goes off

i believe ive got to swap the yellow with another wire??
can anyone help?

[james.l]

swap the yellow with the red wire, this should solve your problem