ZL.

Boge are the best shocks on the market IMO, lifetime guarantee, only 150 a set, i had a short set in my silver ZL after buying countless sets of Monroes and never looked back, theyre very solidly constructed and can handle a fair bit, i used to do a bit of tar drifting and travelled alot of dirt roads at speed(im alot nicer to my ZL's these days) and ive still got those shocks and will put them back when i decide to go low again. i also put a standard height set on the XE i sold and had a stantard height set in my xd, all sedans. best shocks if found and they wont cost you an arm and a leg.

Boge are the best ive found, lifetime guarantee, only $150 a pair.

Have you checked your tailshaft bolts? or the uni's??

As said its a very common problem in ZL/FE usually the bulb holders(in the boot) are poorly earthing, even though they look fine. most likely the heat from the globes warps the plastic just enough to cause an inconsistant connection.

What i did was put battery in the boot and low mount the alternator, will try dig up pics..