then I say maybe. Small bulbs like the ones in ranger corners/dome lights are ok for seires installation only if the source your busting into is strong enough to power all of them. if you try to put 8 small lights; lighted from one small light...no bueno...but 8 small lights run off same circuit as one normal/big light then yeah it will handle the load.
figure out the amperage/voltage of the existing bulb in the box. then, since the new bulbs will be in series, find out the amperage of just 1 of the new bulbs, multiply it by 8 and if its less then your good to go with the stock wiring.