My HU-801 needs a 3.5mm jack input

[Dacvolvo]

Hi Folks

I want to connect my mobile (which has a 3.5mm jack) to my HU-801 head unit. What's my options, please?

I've done a search, but can't find anything concrete.

[Tomcat]

Try pm'ing bobbych, he's sold quite a few modified head units now.