u/Alternative-Cookie69

While trying to install a MoCA system in my house, I found that after powering my adapters I was not getting any coax signal (my AT&T modem does not use coax). Going to the junction box I found 3 lines that had the ends cut off (looks like 2 RG6 and 1 RG11) but I also found 1 line that looks to still be active (with a ground)?? Although I have checked every coax outlet in the house with the MoCA adapter and none of them are transitting signal. Do I need to strip and crimp new fittings onto the 3 that were cut and connect them all? Is the larger gauge wire my input? Any feedback would be much appreciated. Thank you