I don't know if you electronics experts are familiar with this problem but it seems like in 1st gen Lexus models an aftermarket headunit leads to a non-functioning antenna.

Anyone want to take a look? This thread kinda outlines the prob.

https://www.clublexus.com/forums/sho...threadid=60907

this webpage goes into more detail about the antenna relay system.

http://www.autotoys.com/New_Tech/DIY...er_antenna.htm

any ideas on how to get this to work would be great because many people have had this problem and a search brings up nada.

Thanks.

 

BuMp