The instructions assume your ceiling joists run one way. Plenty of garages run the other.

Find out which way your joists run before you plan anything

This is the thing owners actually get caught by. The mounting boards are designed to span several ceiling joists so the load is shared across the structure, and the instructions assume the joists run in a particular direction relative to your parking space. In plenty of garages they run the other way. The correct fix is to rotate the layout so the boards still cross multiple joists, which moves everything, rather than lagging each board into a single joist to make the drawing work. Map the joists first, with a stud finder and a probe if necessary, and design the install around what is actually up there.

Joists, never drywall, and never a single mounting point

Obvious in principle and worth stating plainly, because the consequence is a hundred and forty pounds coming down onto a vehicle. The hardware fixes into structural framing, and the whole reason for the mounting boards is to spread that load across more than one member. Drywall anchors have no place in this job at any rating. If the ceiling is finished and you cannot confirm what is behind it, that is the point to open a small inspection hole or bring in somebody who can, rather than trusting a stud finder alone over your car.

There is a minimum load as well as a maximum

Almost everyone checks the maximum and nobody checks the other end. Harken’s Jeep kit is rated from forty-five pounds up to one hundred and forty-five, and the minimum matters because a block and tackle system needs enough weight to overhaul the line and lower smoothly. A very light top, or a soft top, may sit below that figure and behave awkwardly. Check the weight of the specific top you intend to lift against both ends of the range before buying.

Work out where the rope goes before you fix anything

The hauling line runs from the hoist across the ceiling to a cleat, and the pulley travels horizontally as the top rises, so the system needs a clear run in one direction. Owners report that running the line ahead of or behind the lift position works much better than trying to take it out sideways, and that the longest available diagonal across the ceiling gives the most lift. Decide the route, and where the cleat goes on the wall, at the planning stage rather than after the ceiling hardware is up.

On a lower ceiling, the stored top may be at head height

A practical point that only comes from people who live with one. On a garage with limited height, the top can only rise so far, and owners describe hoisting it as high as it will go and still being able to walk into it. As one put it, you forget once a year and are reminded immediately. Think about where the top will hang relative to how you move around the car, and consider positioning it over the hood or toward a wall rather than directly over the walkway to the driver’s door.

Test it empty, then test it loaded, before you trust it

Run the system through its full travel with nothing on it and watch how the four points behave and whether the line runs cleanly through every block. Then do a first lift with the top on and stay with it, checking that it rises level and that the self-locking cleat holds when you deliberately ease off the rope. The cleat is the safety feature that catches a dropped line, and confirming it works on day one is worth more than assuming it will when you need it.

Check fitment for your specific vehicle and top

Hoist systems differ in which Jeep models and tops they officially support, and coverage varies between Wrangler generations and the Gladiator. Rather than assuming any hoist fits any top, confirm the specific system against your model year and your actual top, factory or aftermarket, and against the ceiling height kit you need. Kits are sold for different ceiling heights, so measuring before ordering saves an exchange.