Gerard, I had this problem with the low beam headlamps cutting out on my 89 200TQ, the headlight switch connector contact pin gets toasted, i.e. burned up, for more details, go to http://www.teleport.com/~scottmo/elec.html#lowb I recommend installing relays, even with the stock headlamp bulbs. HTH Scott Mockry http://www.teleport.com/~scottmo