Maini

So I made the DB25 for the car to integrate the Sony HCB 300 (I am still waiting for it) So I secided to test the DB25.. and I plugged it in and checked the condition on the RJ45.. everything seemed OK.. also I noticed that the radio was saying PHONE constantly.. I looked up on the forum and found that this is normal condition as the mute wire expects +5V to allow the radio to function... So to test that fiunctionality I took a 3 V battery pack and grounded it and connected the +ve to the mute wire... and Lo!! immediately the radio switched over to music and the PHONE disappeared... I checked this about 2 times again and all is well it switched back and forth.. without an issue..

Now today when I was driving I found that my steering no longer controlled the radio volume or change stations or Cds etc.. like it was dead!! I checked all the fuses and all looked OK.. also Once I noticed that the lights on the MFSW were working... then again I checked and found now the lights are also not glowing on the steering... the car is running fine all lights, indicators.. instrumentation etc work fine... Any thoughts and what could be the issue???

Thanks

SouthboroAudiGuy

Now that you've done the wiring to get the DB25 to work (please provide details for the rest of us!), could it be that you have to switch between radio and telephone (R/T switch) to get the controls to work again?

Maini

I just used these 2 articles and followed instructions carefully..

https://www.audiworld.com/tech/elec12.shtml
https://www.audiworld.com/tech/elec10.shtml