they work with a 3 way toggle switch.
off - lights work as normal
on - sleepy eyes comes into operation.
in the on position, the lights won`t pop up as normal. you then toggle the switch to set the lights at the desired height.
its all on pop ups.
we can get the kits over here from Ebay, look for them under MX5. should cost you about $30. if that.
its just a switch and a resistor i think.