Actually, cylinders 1 and 2 are on the same coil. 3 and 4 on the other. Impedence should be around 24k ohms.Then using a multimeter, set on ohms scale, insert the probes into the spark plug caps 1 in no. 2 wire, the other in no.4 . then do the same to wires 1 and 3. your readings should be the same.