T4 Won't start

I've been battling a starting issue all winter on my 2015 T4. It used to crank and start once it got up to 40 degrees. Otherwise if you turned the key the relay under the dash would just continuously click. I replaced the starter and the relay. Jump the screws on the relay and it will crank fine, just won't start. I did find a mouse nest right beside the relay when i opened the dash. Only wire I found chewed was to my winch switch. I've tried jumping with a truck battery and still nothing. Just click click click click. Any ideas? I'm at a complete loss and need my buggy. Thanks guys.https://uploads.tapatalk-cdn.com/202...76ec402838.jpg

Sent from my SM-G970U using Tapatalk