In a 4- to 6-quart heavy pot, combine carrots, pears, pineapple with the juice, lemon juice, cinnamon and nutmeg. Bring to boiling, stirring constantly; reduce heat. Simmer, covered, for 20 minutes, stirring frequently. Remove from heat. Sprinkle mixture with pectin; stir until pectin dissolves.
Bring carrot mixture to boiling, stirring constantly. Add granulated sugar and brown sugar. Return to a full rolling boil; boil for 1 minute, stirring constantly. Remove from heat. Quickly skim off foam with a metal spoon. Stir in coconut or raisins (if desired) and vanilla.
Ladle hot jam into hot, sterilized half-pint canning jars, leaving a 1/4-inch headspace. Wipe jar rims; adjust lids.
Process filled jars in a boiling-water canner for 10 minutes (start timing when water returns to boiling). Remove jars from canner; cool on wire racks.
This jam is absolutely fantastic. Will be making some more for Christmas gifts. Thanks for the recipe.