Corsa B, 96 reg.
Was changing a bulb in the centre console, as one of the SMD's seems to have desoldered a wire. Replaced it with a green led strip light, went to wire it in, and didnt work, reversed wires, still didn't work. Check fuse, all good. The multi function display will only work with lights on now, it was fine before.
Checked the voltage going to the back of the centre console light bit, and it's only 3.4V.
No rev counter, no temp gauge, no fuel gauge, not checked speedo as not drove it since I have this problem...
So, hive mind of the forum, what have I broke, and how do I fix it

Cheers !!
PS, bit warm innit !