Intermittent start/no start

Part 1: My 93 Pontiac Transport GT !. is now in Spain with me. It has spent most of its life in UK, I need New headlamps for it. It is a left hand drive. has anyone any idea where i can get two replacement headlights for use in Spain .do i need to get the whole assembly or can i just get the lenses and bulbs ?

Part two.
It starts when it feels like it... there seems to be no sound reason for it. It has been suggested that it is something in the immobiliser circuit but i have no idea? you can get in everday and it will start frist time for 2 or 3 weeks, then suddenly for no apparent reason it willnot start, you can try different ways of locking and unlocking and it might start and it might not.. go and have a coffee, come back and open it in the smae manner as before, and it will start.. (maybe..or maybe not).. the point is, it is so unrelaible we never know if we can trust it to start or not...
has anyone any ideas of where to start looking or what to do to solve this problem... lshort of scrapping it !!!

Thanks a lot,
Brian Jenkins

Please look at www.ebay.de for used headlights, you should be able to find it. I think the headlight is one unit, and it is not possible to remove the lens.

Please look at www.ebay.de for used headlights, you should be able to find it. I think the headlight is one unit, and it is not possible to remove the lens.


Thanks will give it a try

Does any one know where i can get a wiring diagram for the alarm/immobiliser circuit. I have been told this is where my starting problems may be.

thanks
BJ