FLYVMO

The stock rear wiper motor is very small and compact, so I don't think you would gain any reduction in weight or size. I have not looked into it as I did a rear wiper delete on my car. And regarding controlling the rear wiper motor with the infinity box system, I couldn't tell you because of the reason mentioned above. I never looked into how the rear wiper motor system is triggered, but perhaps the wiring diagram will tell you if it has an internal or external park feature.

As far as price goes, I would suspect that it may be possible to find a rear wiper motor at a lower cost than stock, but I don't even know what the stock rear wiper motor costs new. Not much help I know, sorry

Cheers!
Carl

FLYVMO

In order to activate the brake lights, the 928 (later models) use a switch mounted "behind" the brake pedal in a circular bracket. When the pedal is depressed the plunger on the brake switch is released out and creates a circuit which allows +12V to flow through the switch.

As the Infinitybox uses ground switching (low-side), one needs to add a buffer chip called Invert Mini which takes the +12V and turns it into a ground signal instead. As long as the Invert Mini is used, the stock 928 brake switch can be used.

However, when one adds a GM cruise control or other devices that need two separate signal paths (one default to open, one to closed), one needs to use a switch with two separate circuits as pictured below. Or one can add a microswitch that also rests against the brake pedal that has a circuit that is active when the brake pedal is NOT depressed.

The switch pictured has one "normal" circuit that works just like the stock switch, and a second that works opposite. This allows the cruise control to receiver power as long as the brake pedal is not depressed. Once the brakes are applied with the pedal, the cruise control circuit is broken and disconnects the cruise.

Also finally got the driver's side window in, and in order to avoid scratching the glass or paint, I used thick terry towels to allow the glass to slip down easily into the crevice. Next is to get the regulator and motor installed.

Baby steps...

Cheers!
Carl

BTruesdell

Carl,
First off, your work is absolutely stunning! I am blown away by your attention to detail on this project. I have been in love with the 928 ever since I saw one at DIA when I was 12. I have been thinking about doing something similar to this for a while (but won't be able to start for at least a couple of years still). Can I ask how much you have spent on this?

Petza914

I say run a poll on the thread for a couple weeks and the winner gets a ride in Carl's finished car

S4ordie

If you gotta ask......

These sorts of projects are very expensive even if you do a lot of the work yourself. A car finished to this level of detail represents several good condition S4's in today's market. How do I know?

https://rennlist.com/forums/928-foru...-part-4-a.html

Then a little snippet of exhaust work on another S4. This car went through a complete refresh, sans paint - drivetrain, suspension, interior refresh, etc. Extensive to say the least.

https://rennlist.com/forums/928-foru...tallic-s4.html

Carl's efforts his car are incredibly and to the very highest order.

FLYVMO

Thank you for the kind words, and it is great to hear that my work can inspire people. I do hope you get the time to do it, it is great therapy

Honestly I have not added up all the receipts, but as Dan (S4ordie) pointed out, and who went through an amazingly spectacular resto-mod, I am fairly confident that I could have bought a couple of VERY nice S4s for what I will have into this project when it is all done. But in the end I will have my very own, as I want it, nearly new 928

As with any project, a road map is important, and for mere mortals like me, a budget! It is easy to get distracted, carried away, frustrated and excited all at once. If you are going to take on a project like this by yourself (insanely expensive if you farm out the labor), sit down and make a projection on what you need and want, then price it out. That will get you a ballpark number. Feel free to ask questions, if I can help, I'd be happy to.

Cheers!
Carl

MN

This project is unfortunately one of those things where "[i]f you have to ask how much it costs, you can't afford it" may apply.

The 928 is generally not an inexpensive car.

FLYVMO

Technology and availability is finally catching up with my project

With the aging of the instruments on the 928, and the relative scarcity of digital dashes for '89 and up that are still functioning properly, I decided that I needed a better long-term solution. So after some research I think I have a solution that will fulfill all of MY needs, and perhaps for some other owners doing rest-mods as well.

This unit will communicate with both the InfinityBox electrical system and OBDII port on ECU, as well as take sensor inputs via 44 GPIs.

A little teaser of a project in the works...

Automotive grade display
44 GPI (General Purpose Inputs)
OBDII interface (on prototype)
J1939 CANBUS (analog-to-CAN)
1 or 2 composite inputs (FLIR camera, NAV system or Backup camera)

Selectable screens (SPORT, COMFORT, NIGHT/FLIR/NAV)
Day/Night skins

Currently in the design/programming stage. Will post pictures once the actual prototype device is finished. If there is enough interest it could be made available as a low production run (10 units minimum).

Some early sketches below how it COULD look, loosely based on Audi's virtual dash:

Cheers!
Carl

ramcram

Well I'm definitely up for it. I have been drawing all sorts of clusters [Intellitronix and Dakota Digital] to fit in the space. I love the new Audi unit and the BMW one is not bad either.
I stopped playing with ideas because I'm a long way from needing it and I hope something would pop up and it looks like it might have.
Well done Carl.
I'm just finalising my twin E-throttle body mod at the moment.

sprfrkr

Is this really something that is currently available to the aftermarket car industry? User programmable digital dash screens?

FLYVMO

Yes, there is one available from Autometer, but it is a smaller 4:3 screen 7" diagonal. That is the only one I am aware of at the moment. It is around $2,400...

The one I am working on is a much larger screen, 12.3" diagonal with a 8:3 ratio, and higher resolution as well.

Cheers!
Carl

77tony

That centered tach/speedo Digi-dash layout look great and you can count me in for one. Look forward to next step of this marvelous project. T

RennPartsDirect

Can't wait to see that dash in action... Carl, you never cease to amaze.

BC

Always wanted the same thing. Dunno how much it would be, but I would sure like to be part of it.

BTruesdell

If you do end up having fractions on the fuel gauge, you should go porsche style and have 4/4, 3/4, 2/4 and 1/4.