hello my temp gauge has stoped working im wondering if anyone knows which sender sends to it, is it the one you can see from above (a black 2pin) or is it the one you can see from below (a blue 4 pin)


ive been looking at vagcat and elsawin and my money is on the 4 pin but the bloke in the parts shop recons its the 2 pin

i have a 1997 2.5l tdi t4 acv engine

ps do you think ill have to drain the coolent or can i getaway with popping it out and the new one in????????? thanks nic