Thanks Roger. Are the LEDs dimmable using the exiting dimmer wheel under the dash?

No, the resistance is wrong, but Ed makes a module that will dim the LEDs. For it to work well, you'll need all the interior lights to all be LEDs (HVAC, aux gauges, etc)

Any updates on these? How well do the board edge connectors work with the factory wiring harness?

Maybe a voltage controlled LED dimming driver could be patched in?

Seems like the early issues are worked out and maybe its time for group buy to get the numbers up.

We have sold over a 100 sets so far with nothing but happy customers. Teething issues with the first few sets were sorted by the designer. I have plenty in stock and no need for a group buy unless you want a "deal" based on quantity.
Connection to the factory harness has not been an issue at all. We added LED's to replicate the ambiance of the original lighting and work with the original dimmer. If you want to add brighter LED's and a dimmer to match you can.

We also sell the boards for the early 78 cars as well.

Roger can you confirm or deny Petza's reply to my earlier inquiry about the dimmability? Is replacement of ALL other interior bulbs to LED required?

Hi Nate,
Unfortunately, and no disrespect, Petza914 is not correct (and as far as I know does not have one of our kits) about the dimmer with the LED's as supplied - see post #7. Remember our goal was to emulate the original lighting and not super bright as some folks want. Instructions include info on how to upgrade to "BRIGHT" led's and also enhance the brightness of the the cluster.
Also, and above, starting at Post #47 it shows how to increase the brightness by changing the LED bulbs and adding a dimmer.
No idea about other bulbs but if you use our stock kit nothing else needs changing. If you change to brighter LEDs I do not know the effect on other bulbs.
Roger

Correct. I do not have one of Roger's kits. I have pod LED wedge bulbs from Jager and one of Ed's dimmers along with all regular incandescent bulbs everywhere else. When I hooked up the dimmer with that setup it worked great on the wedge bulbs but essentially shut off the light output from the other bulbs once I had the LEDs at the intensity I wanted them.

Currently I'm bypassing the dimmer until I can change all the other bulbs to LEDs.

Thanks for clearing that up Rog!

I just installed a LUTZ Automotive hard circuit board in my '83 928...I got tired of messing with the 'X-Ray Film' circuit foil....Very nice item....Now my speedometer goes to 40 MPH on start-up & stays there. I have NO Tach., Temp, Oil pressure or Voltage gauge reading....All the warning lights go on when I turn the key & all of them go off except Brake lamps & brake fluid....At least my Fuel Gauge works now...It seems that because of the added thickness of the hard-board, the black plastic clips don't engage the contacts on the back of the gauges...I modified the clips by adding some Aluminium tubing to extend the contact pins ( see Pics)
https://cimg5.ibsrv.net/gimg/rennlis...f3ec3bc331.jpg
Normal clips on the right, Extended one on the left...Let's see how it goes.
Anyone have an idea why the speedo ( That worked with the Film circuit,) Suddenly reads 40 ?? A bad ground somewhere, Maybe....I AM getting faster taking it apart, Nothing like practice...LOL

Instead of putting the whole pod back together, you can save time testing. Just plug in the instrument cluster into its 3 plugs and leave it sitting on top of a towel then go for a test drive. As for the nonfunctional gauges, assuming they all worked before, it's more likely than not a connection issue with one of those three connectors, or possibly an issue with how the boards are installed into the back of the gauges. I little sleuthing with an ohmmeter will tell you -- test connectivity from the car side of the connector, follow the trace you're testing, and test where it ends up at a gauge for connectivity. Did you use DeOxit? Did you inspect the three big connectors to make sure that none of the little contacts inside are bent? Triple check the instructions to make sure you've got everything installed correctly. Also check with Roger as to those standoffs and in fact all your issues. I'm going to assume that if nobody else has had issues, which Roger will know, then I would be very hesitant to go making any changes. What's that black fuzzy stuff in your picture? If that's dirt then clean everything, this is definitely an area where surgical cleanliness is a Good Thing. One final note -- the speedo repair guy I took mine to (Palo Alto Speedometer) mentioned that the capacitor(s) do fail over time. I have no idea if that can cause the issue you're seeing, but as a general matter, now that you are taking it out again you should have it tested and calibrated if you haven't done so already, and they'll change out any old electronic components. It'll be good to go for decades. Good luck!!

Hey man I'm having these exact same issues! Were you ever able to get it resolved?! Thanks!

That's weird. I had the Lutz Boards in my 81 Euro S and they worked perfectly.


https://cimg5.ibsrv.net/gimg/rennlis...0833fffda2.jpg

Yeah I'm definitely scratching my head right now haha. Before I replaced the foil with this kit only my tach and oil pressure gauges worked. No odometer, speedo, temp pegged, fuel pegged, voltage dead and I had just the flashing exclamation light. My high beams indicators worked as well as the OXY light and turn signal as well as all the individual lights. Now though, with ignition ON even with headlights off, the actual illumination is already on which is strange. My high beam indicator now flashes instead of exclamation. When I actually toggle the high beam lever, it turns on and off a brake fluid light (huh???). Speedo goes to 40mph. It's just a **** show right now haha I'm so confused. My 928 was built in 04/1982 so it should be fine. Triple check all the setup/wiring and it's all coordinated and wired up right. Anyway, yeah, super confused.

Bryan Lutz is an amazing electrical engineer.
Kdruva - I have passed your emails to him.
He will get back to you and try and help.