OIL PRESSURE PROBLEM

HELP….
The oil pressure warning light and buzzer comes on when the revs get to 2000rpm.  It didnt happen before I changed the dash and a few switches!!!!!!!!!!!
On tickover and up to 2000 its not a problem……any idea's.
I might fit an oil pressure gauge to see exactly what happens.    Has anyone got one for sale for a GTI dash? and are they easy to fit?    

Faulty high pressure switch ?

Make sure the binnacle is earthed properly.

Braided wire from the rocker cover to coil bolt.

Pin 2 brown is the earth.

You can shim the Mylar connector for better contact by putting a strip of electrical tape under the flap of the copper connectors, make sure they are clean too.

Faulty switch as pointed out, but get a VW OEM one as aftermarkets don't always work well.

1….Make sure the binnacle is earthed properly.                       ok

   2….Braided wire from the rocker cover to coil bolt.                   ok

   3….Pin 2 brown is the earth.                                               Is this on the switch or the coil

   4….You can shim the Mylar connector for better contact by putting a strip of electrical tape under the flap of the copper connectors, make sure they are clean too.                 is this on the switch also or coil?

And last but not least where is the switch?       PLEASE EXCUSE MY LACK OF KNOWLEDGE  :?

Just one more thing.........the oil light doesnt come on when you first put the ignition on..............dont know if this means anything?????

Just one more thing where does the earth for the binnacle connect….binnacle end?  and I have no connection from the rocker cover to the coil??

   

non-gti the dash earths to the claw above the fusebox, gti (well mfa cluster) it earths to the side of the head.

check the large pressure switch in the oil filter housing, it should be white and rated 1.8bar. dont go by colour alone especially if its cheap pattern part. wire colour is black/blue, and check that too

Much appreciated
amasny thanks

Did you get this sorted , i know i am late in reply.
I would bet on the Mylar connector , as you say all you have done is change the Dash. Give it a wiggle while you are revving engine it may be a bad connector. My lad had the same problem when he put his dash in his caddy. Just a poor connection. Elecy tape behind the contacts  is a good idea also

try switching the 2 pressure switches or wires over actually, they work opposite to each other. could be why buzzer is going and light isnt coming on with ignition...