I'm in the process of fitting an new oil pressure gauge, can i just take the wires from the back of the original in dash, rather than fiiting a new sender etc? And, anyone know where the tube thing connects on a mechanical boost gauge?

The standard sender is very unreliable and a common fault on these cars so not a good idea.

You're not putting a new gauge in cos the old one stopped working are you? If so it will be the sender that's faulty.

 

Boost gauge just connects to one of the vacuum pipes on the plenum.

Isnt the original sender the wrong palarity too?

yep

Original gauges are working properly, just want to fit aftermarket! Anyone know if i can run 2 boost gauges? One for each turbo?

Doesnt the balance bar balance the boost between the two turbos as thats where you plumb it in??

So only one gauge needed.

Taking a guess here, lol.

How's about if i plumb it in to the little pipes you use to up the boost? There's one of them on each turbo!

Place a t into the little pipe coming off your balance bar, that is the standard boost gauge pipe, then you will be able to check how bad the original was.