Zenith H13E05LG (2005)losing its horizontal hold, is there a replacement part or adjustment-user manual doesnt have schematics

SOURCE: Zenith C27C41T, Horizontal Hold

It is internal to the set cannot be adjusted probably have some bad capacitors in vertical section.

SOURCE: Adjust the headlights on 2005 Sebring, Touring Sedan

The adjustment screws/nuts should be located either on the top of the headlamp assembly, behind the headlamp assembly, or near the frame rail by the radiator support.

You will have vertical adjustment screws for each independent beam (separate highs and separate lows, but will be same screw if highs and lows are the same bulb). You may also have additional horizontal adjustment screws as well

Park your car on a level ground 30 feet from a wall and measure the height from the ground to the bulb and mark on a wall. Also mark where the center of the bulbs would be (do this for highs beams and low beams if the bulbs are separate, if highs and lows are the same bulb, only do it for the lows)

For Low Beams: If the headlights read VOR, then aim the brightest part or cutoff part just below the mark on the wall. If it says VOL or nothing, aim them 2 inches below the mark on the wall. For horizontal, aim the hot spot directly at the line you marked for the center of your bulbs

For High Beams (if separate from low beams): Aim the headlight directly at the line you marked on the wall.

SOURCE: users control manual adjustment

there are little plastic knobs on the inside or its done through the service menu. try http://www.shopjimmy.com/ they have really good on site techs that will help you on the phone for free.