I recently purchased a 97 disco !. I love it. However the lights flicker I was thinking this could be a alternator issue however I was also thinking perhaps a voltage regulator. Rather then spend alot of money on swinging tree mechanics which is the more likely colperate? And I have a squeak increasing in the rear going over bumps sholuld i worry I mean imy rear end squeaks once in a awhile this car has 140K and yes i am in love