1985 Jaguar XJ6 no headlights

== == well first check the fuse and connections ( check all the simple and stupid things first). Do you have absolutely no head lights or just some on high beams and some on low ? because if you do there is a good chance that you have burned out just part of one head lamp. because headlights have a separate high and low part of the bulb. witch would means you can have no highs, but have working lows.