on dash display

Main display runs through start up, but tach and speedo needles just pulsate about 1/16 of inch. Display does this for about 10 minutes, then as I’m driving around, everything comes to life. How do I troubleshoot this?

Hello, we are looking for 5 to 6 JL owners that may be willing to beta test with an on dash display. Full instructions and details will be sent via PM. If you have interest please send a direct message and we will work to get back promptly with all details around this beta test. Thanks in...