Accidentally cut purple wire, now fuel gauge doesn't work

[stutaeng]

Hi guys, I hope someone can help me out. So a few months ago I was chasing a non-working brake lights issue. In trying to remove the corrugated tubing from the fuse center to the firewall, I accidentally cut a purple and green wire. I spliced and soldered the wires back together, but noticed my fuel gauge is not working. I double checked the splice connections, but they are well made.

I thought If I disconnected the battery that would work, but it didn't. Gauge was working well before (just had the hummingbird effect.) I've been driving it like that, but it's annoying not having a working fuel gauge.

Any thoughts?