#1
ive got a vintage v100 les paul copy and want to install a factory fitted 498t pickup (bough off ebay) and new 490r pickup which i am going to buy. can i use these together as one has two wires and the new one has four???????????????
#2
yup, you can use them together. For the one with two wires, one is hot and goes to the volume (or pickup selector, depending on the control layout of your guitar), and the other gets grounded. For the one with four wires, two of them are the same as the 2-conductor pickup (one is hot, one grounded), then the other two get taped together, or can be used for coil splitting, where you essentially turn your humbucker into a single coil.