My right headlight is much brighter than my left someone said I have it on full beam but been told it may just need an adjustment how do I do this?

Yes they should be adjustable because people change tyre profiles front to rear and this alters the drive angle.The adjustment screws are in the headlamp housing behind lamps accessed from the hood/ bonnet side.you do need to do this properly so they align together at the legal height for full beam.there is plenty of online information on the correct height for full beam...once you have made sure all Your tyres are at the right pressure....park on level ground ...at least 3 meters from front of a wall ....and at right angles to the wall....measure the height to the centre of headlight to ground .......mark the right light horizontal line for correct height on the wall and make sure you put lights on full beam....they should shine slightly below (say an inch )to the marked the measurement of height of lamp on the vehicle....adjust until the right hand light horizon is an inch below...now mark vertical line to cross centre of reflected light....this will give you a register point to mark where the left light should fall ...this will be exact distance apart as on vehicle and again adjust left until it falls below 1inch of the measured height line of lamp on car......mark distance from right to left light and mark the same height in chalk....then adjust left light to pinpoint marked chalk cross.adjust the beams by turning the spring loaded screws behind the lights.once you are happy check dipped positions....on right hand drive the lights should dip below and left.left hand drive dip below and right.you probably didn't need so much info but ...hey it's free and it saves any misunderstanding.hope this is of help...please vote.thankyou.

Headlight adjustment is fairly straight forward, you will need to park the car on a level surface with a fence or wall 25 feet away and a reference point for measurements to the right or left of the car. First measure from the reference point to the center line of the car then transfer that to the wall, second, measure from the center of the car to the center of the headlights and transfer those to the wall, third, measure from the ground to the center of the headlights and transfer that to the wall. Once all of the reference points have been transferred, adjust the left (driver's side) headlight so that the most intense part of the beam is 2 inches below and 2 inches to the right of the left mark, the right (passenger side) headlight should be adjusted so that it will be 2 inches below and 1 inch to the left of the mark. If done correctly, you will have very good night vision without blinding oncoming traffic.

P.S. Please note that any heavy objects in the car will be a factor in correct headlight adjustment, have the car loaded as it will be normally used.

yes you need to adjust it find a wall that you can see both beams and do the adjustment neccesary and your on your way common when roads are not the best or you hit something lightly the headlights change position

my guess is headlite alignement, if you carry a load have them adjusted with a full load on

There are two adjustment points (screws). For example left headlight: you will see one point near the end of left wing, at bottom side through a wing hole. This is for vertical plane headlight beam adjustment (up-down). Another one point is against water radiator side. This is for horizontal plane headlight beam adjustment (left-right).

two screws on each headlight control the direction the headlights are aimed. One screw, usually at the top but sometimes below the headlight, adjusts the headlight up and down. The other screw, located to one side, controls the headlight from right to left. Turning the appropriate screw one direction or the other will change the direction the headlight points.
In order to aim your headlights you need to have a flat vertical surface you can aim your headlights at in front of a level surface on which to park the car. If your driveway is level your garage door is the perfect place to aim your headlights.
The tools you will need for this job are simple. Masking tape is used to mark where the headlights are to be aimed and a screwdriver is needed to adjust the headlights. A tape measure will be necessary to measure the distance of the vehicle to the surface you're using to check the aim and to measure the up and down distances from your marks.
To start you will want to pull your car quite close to the surface you are using to aim your headlights. This is done to allow you to mark, with the masking tape, where the headlights are on the car. With the car right up against the vertical surface, and your low beam headlights on, the center of the beams will be directly in front of the headlights. Use your masking tape to mark straight across where the headlights are shining. Use short pieces of masking tape to mark vertically the center of the low beams.
, back your car about 25 feet away to check the alignment of the headlights. The brightest spot on your low beams should be about two inches below the masking tape and slightly to the right of the vertical marks. Use the adjustment screws to move the beams up and down, and right and left, until the headlights are aimed properly.
If your car only has two headlights, that's all you need to do. With the high beam lights integrated into the single headlight there is no further adjustment possible. If you have a four-headlight system you will next need to adjust your high beams. Switch to your high beams and adjust them so they shine just below the line and are centered between your two vertical marks.

good luck

There are two adjustment points (screws). For example left headlight: you will see one point near the end of left wing, at bottom side through a wing hole. This is for vertical plane headlight beam adjustment (up-down). Another one point is against water radiator side. This is for horizontal plane headlight beam adjustment (left-right).
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You have a bad ground on the left low beam. Using a test light connected to ground see what wire is positive with low beams on. Using a piece of electrical wire connect one end to ground and with the headlight connector connected to the headlight and headlights on stick the other end into back of the connector at the ground wire. If the light gets brighter, you can cut the original ground wire to the connector ( 2-3 inches from headlight connector) and run a new wire from ground and connect it to the wire at the connector. Hope this is helpful.

Might as well check the orange headlight control unit first, as it is an extremely common issue, and will only take you 20 minutes. Here is a step by step tutorial with pictures to examine and repair it. The tutorial is from a 1995 900 but is fully applicable to your car.