My car dashboard lights blink on when I hit a pot hole and also when I accelera. on 1996 Toyota Land Cruiser

I have checked all the loose wires thought would be the cause but no avail also changed the timing belts plus all the engine belts but still not please infom me what would be the cause

Asked by for the 1996 Toyota Land Cruiser
poss headlight switch
1 more answer
poss headlight switch