Clarion NZ503 system not seeing the Javelina tank monitors
I am installing Clarion NZ503 to replace the Blaupunkt in my 2005 U270. I have the rear view camera working, as well as AM/FM., and the XM radio I can not get the Javelina tank monitors to work on the auxiliary video connections. I have the parking brake wire from the unit connected to a hot, positive feed as instructed. I know the Javelina tank monitors are working because I can switch to a temporary monitor I have been using. I have read and re-read the installation manual. I must be missing something. Any advice would be greatly appreciated. Thank you