Just bought a 2014 peugeot expert van. came with rd4 radio but i really need bluetooth phone, decided to try installing a harman becker rneg i got from ebay. I needed to make up the 6pin plug for the screen and feed it from slightly differant pins on the quadlock. upon trying it the screen doesn't come on, can hear a-m radio with the beeps as i've not coded it. so my problem is either a broken rneg/screen,a setup problem, a wiring mistake? anyone had any experience? know who a could sent it to to have it tested/repaired. I would be happy to pay someone just to test my unit to rule out whether or not its broken before contacting the ebay seller. thanks.