2nd Gen Non-Engine/Transmission boost gauges

[FishDoc]

Does anyone have any ideas on how to use one boost gauge to read two different pressure sources? i. e. engine boost and exhaust brake pressure Thanks.

 

[vssman]

You could use an electric solenoid to switch between the two or even a manual valve

 

[Tcolesanti]

One of those small manual valves from home depot and some compression fittings, outta do it. If you need an in-cab switch, hook a push-pull cable up to the manual valve.

 

[JPittinger]

An electric 3-way solenoid would do it. I use ASCO brand at work, and I know you can get 12 volt coils. A toggle switch in the cab would control it.

 

[BStowe]

Correct me if Im wrong, but isnt turbo boost while droping down a grade usually somewhere around zero, and the same for engine brake pressure while the engine is under a load?