Whats happen??

[91 4x4]

I cut my ground on tail lights regrounded it now when I turn headlights on the light on my ac unit goes off nd my gauge lights aint workin wtf? Any suggets would help find wats goin on

 

[96k1500]

Mine did that when I pulled a trailor that wasnt grounded properly but I lost all lights cause it blew a fuse