[Rooster]

The double din headunit will be my next mod to my xc90,

As much as i like the standard look it is almost impossible to upgrade and work correctly,

The parking sensor issue had me thinking and having worked on volvo's for quiet a long time the earlier parking sensor kits pre-2004ish used to wire to the reverse lights and have a buzzer in the boot area,

So basically the module took its power from the reverse lights and worked when they were on and went off when they were off,

but am sure they used to use a very similar park assist module, loom and sensors,

I have bought a park assist module from a classic s40 and keep meaning to empty my boot enough so i can get side out and see if sensor loom will plug into it as if it does then if i can get hold of other bit of loom with buzzer then i can keep my sensors working,