So I'm getting everything sorted out on my 78 hilux. My tail lights work fine (brake, signal and reverse) when the headlights aren't on but when I pull the switch to turn the headlights on, the brake lights become the turn signals and left and right are reversed, tail lights come on with reverse light. I'm fairly new to the hilux thing but if anyone could point me towards the most likely culprit I can start there. Curious if there is a module that controls these functions or if it's just the switch on the dash. Also I do get a faint flash from random bulbs that shouldn't be flashing both with headlights on and off. Thanks in advance. I'll be sure to post up what I find.