Acoustic transfer functions from mounting points of front wiper systems on vehicle body to driver ear positions can describe vehicle noise transfer properties. Component based TPA methods can be applied to characterize the wiper system as a noise source from the vehicle point of view. The same methods can be utilized to characterize the wiper drive as a noise source from the wiper linkage point of view. The paper presents a method to characterize the transfer properties of the linkage independent from the drive excitation. The linkage amplification method presented here provides force-force transfer functions from drive connection locations to the linkage and mounting point locations of the linkage to the vehicle body. The presented procedure focuses on TPA method within a vehicle component. Synthetized FRFs calculated at drive connection locations and at mounting points of the linkage at measured points of the modal model from experimental modal analysis are used for calculating the linkage amplification functions.