Sounds like an interesting experiment, why don't you make your own recipe if no one else has one? This is one of my favorite parts of winemaking.
All you really need to start making wine is to make sure a few things are measured:
Specific Gravity (SG): To keep track of alcohol % and to give the yeast plenty of stuff to convert to alcohol. Maple Syrup seems fairly sweet, but it's always best to check. I would hazard a guess and say you will need to add water. If you don't have a hydrometer, go get one, they are very useful.
Acid: Check with a titration kit. I always shoot for 0.65% - 0.75%. The maple syrup sounds like it will be low in acid, but I'm not certain, just a guess. It's easy to use tartaric acid to make adjustments since the titration kit is measuring that acid specifically, but acid blends work fine too.
Then you have to determine the amounts of a few things:
Wine tannin - My container has instructions for heavy/light wines, but this can be optional if you wish. I like tannic wines, so I generally add plenty.
Yeast Nutrient - (mine says 1/2 tsp per gallon, follow your container's instructions, but you probably won't hurt your wine by putting a little too much in)
Pectic Enzyme - not sure if you'd need it here, but it won't hurt if not.
k-meta - add 1/4 tsp per 6 gallons (that's what mine says anyways). So divide or multiply for your batch size.
OTHER ingredients: This might be where you get creative. Adding spices, maybe Allspice, or cloves, some fruit, things like that. Or nothing extra, that's fine too.
Add all this first and let it set for 24 hours in the primary, covered with a towel or bucket lid.
Then pick yourself a yeast and add that to the mix, and you're on your way to maple syrup wine.
Once you've racked the wine a few times, and most or all of the sediment is gone, add Potassium Sorbate as directed on label to ensure no renewed fermentation.
Now, if you want to sweeten it, I'd suggest getting more maple syrup and adding it as an f-pac. It's important to do this at least a week AFTER you add the Potassium Sorbate. I always wait a month, but that's just my racking schedule. Sweeten to your own tastes.