oil light flashing which sensor

ok so i bought all 3 sensors for my car from gsf

i put my reg plate in and got all 3

a white one a blue one and a black one

which do i replace the one on the side of the head in mine is blue

do i swap this for blue and were are the others


i get my flashing light when the revs are above 2.5k for 2 seconds

thanks

The other sensor is ontop of the oil filter under a rubber boot, mine is white and I've also got a blue one on the side of the head.
Don't know about the black one.

check the ratings on the switches you have bought, pattern ones dont always match up to vw colours. the one on the side of the head is 0.3bar and the vw ones are brown or blue (NOT black) with a yellow wire.  the one on the filter housing is 1.8bar and is white with a blue/black wire.

the smaller one on the filter housing is the mfa/vdo oil temp and should be white, rated 0-150degrees with a green/black wire