Originally Posted by Ryan_G
This is an impressive unit. I would really like to get one of these so that I don't clutter my cabin with a bunch of guages. How hard would this be to install yourself if your electrical skills are minimal? Anyone that has received one already and installed it that could let me know?
The electrical part is fairly straightforward if you have basic skills.
You need to run the respective wires from your sensors to the controller. These are EGT, Oil pressure, and so on.. As for RPM, the Miata ECU has a tach/RPM out anyway, you can just splice into that.
(I can provide details, if you like)
Running a dedicated ground for the controller is a very good idea... I used the engine block for that.
As for the mechanical part, there is no one single solution for that.. The whole setup depends on your needs, preferences, and imagination.
For the basics, I used a a sandwich plate for the oil pressure and temp sensors. Works like a charm. Coolant temp was a bit more involved; I had a machinist make a T adapter where the "leg" of the T was threaded to accept the coolant temp sensor. I then cut the heater inlet hose and installed the sensor housing on that hose, for best results. PLEASE DO NOT FORGET TO RUN A GROUND TO THAT SENSOR. It is on a rubber hose, and will not work if it is not grounded. Same goes for all types of sensors mounted on non-metal surfaces/components.
The most trying part is the display itself.
Please read my post in the beginning of the thread for details. I still have a clear plexiglass panel I had cut to use as a template, and I can happily post pics/details of the template if you choose to install it as a single din unit above/below/in place of the stereo head unit.
All in all, I would say,
* Use new wires of proper gauge
* do not just twist wires together - solder and shrink tube all connections
* ground on clean, unpainted, rust free surfaces and use a dab of dielectric grease (amazing long term headache remedy)
* leave enough slack on your wiring so you do not break any lines if you ever need to remove anything
* run related wiring together in a split sheathing.