altezzas are as easy as stock lights. just take note of where each globe goes.
the angel eyes are pretty easy as well. the only part which needs a bit of work are the halos. these are the parkers. from each halo there will be 2 wires. usually a red and black or black and white. solder together the wires of the same colour - so the 2 black ones together etc... then get the joined wires and crimp and solder on a male 1/4" blade terminal. this leaves you with two 1/4" blade terminals from each headlight.
get your stock parker bulb and pull out the stock socket from the harness. this will reveal two female blade terminals in the harness. simply insert the male terminals into these (test to see which goes into which) and away you go. then just bolt up your lights.
get a mate to help and it should be done in about an hour, maybe 2