Auxiliary Gauges - From Where Do I Obtain a Signal?

[KissezFun]

I observed a gauge holder on eBay that substitutes the ashtray (E91).

[KissezFun]

https://www.ebay.co.uk/itm/125806492820?mkevt=1&mkcid=1&mkrid=710-53481-19255-0&campid=5338774556&toolid=10001&customid=130832X1595858Xf6e31a21de8d4626448894febb358dae&subId2=15

[KissezFun]

And gauges available on AliExpress for under £5 apiece

[KissezFun]

https://www.aliexpress.com/item/4000273946769.html?sv1=affiliate&sv_campaign_id=314851&sscid=69350_1761998998_6ca1f8a65130176ea9f04bfff8c0ff3b&awc=69350_1761998998_6ca1f8a65130176ea9f04bfff8c0ff3b

[KissezFun]

I wish to incorporate water temperature, oil temperature, and oil pressure, but what mechanisms will provide the necessary signals for the gauges?
Is a device required to connect to the OBD? Is it an emulator or something similar?
Are there physical wires available for connection?

[p00rmansp0rsche]

I assume it will not be straightforward, given that information is transmitted via the CAN bus from the DDE.
If you possess a device capable of interpreting the bus, you can connect at the JBE, as that is the source from which the M performance steering wheel obtains its information.

[KissezFun]

As I anticipated. Utilising cables for connection was my desperate attempt for solutions.

[developer]

I possess an aftermarket heads-up display unit. Some will exhibit all the aforementioned items and are connected to the OBD port. I am not a specialist in this area; but, could you not acquire a gauge holder that directly connects to your OBD port? I am confident that AliExpress may possess one; they appear to offer a comprehensive range of products. 🙂👍🏼

[KissezFun]

I have indeed perused AliExpress and observed the HUDs you referenced. I am quite fond of the concept of permanent gauges, however. I have noted that the Mighty Car Mods Hilux project utilises the standalone Haltech engine management system to control a stepper motor for the original speedometer, but that will require a restomod budget rather than an AliExpress budget.

Richard from Bad Obsession Motorsport has engaged in Arduino programming for the dashboard of Project Binky, suggesting a potentially arduous endeavour in creating a custom build. Further research becomes necessary.

[Matt865]

The sensor accompanying the gauge is predominantly utilised.

It becomes somewhat simpler when utilising a standalone or plug-and-play ECU; nonetheless, sensors are still required for the ECU to function effectively.


The most challenging aspect will be the oil temperature sensor. Generally, it should be positioned low in the sump.

[KissezFun]

I am currently considering locating a device that can interpret the information on the CAN, as all the sensors are already present and accessible through the concealed menus.
The inexpensive AliExpress HUD devices can interpret the information, but I believe it would be preferable to have a set of analogue gauges similar to those in the initial post to exhibit the data.


I am presently descending down this wormhole...

[KissezFun]

 

[Matt865]

Exercise caution, as oil pressure may not be accessible due to a fundamentally different sensor configuration compared to an oil pressure indicator light.

Many oil temperatures are determined through calculation rather than direct measurement from a physical sensor.


Can is fundamentally straightforward once acclimated; yet, several aspects can be quite challenging to decipher. Fortunately, this does not apply to you.