Andrew, not going to lie, you got me considering the PDM 28 as i'm changing all wiring in my car. Want to have a discussion on the benefits to be had. I already have moved away from the bulkhead, so all wiring would be going through the PDM (lights/etc included).

Keep in mind that unless you leave the PDM on all the time, circuits that would have been on the battery side of the fuse panel will be off. PDM28 draws about 150ma when on, even not doing anything.

Putting a 28 in my car and all of the "battery" items will stay on the OE fuse panel. Everything else will run through the PDM. That short list includes but is not limited to:

1. Headlight Feed
2. Tail/Park/Dome Feed
3. Hazard Feed
4. Radio
5. Trunk Release
6. Gauge Feed (bat) (Dakota Digital)


Also worth noting, 28 circuits sounds like a lot but for a street car it really isn't. Especially if you want to keep circuits separate.

Andrew, I'd be interested in knowing more about the PDM. Saw a segment on PowerNation TV that they're using one in their track Camaro, but it was more of an ad than anything.

In simple terms the PDM takes the place of the fuse panel and handles all of the switching functions that a bank or relays would handle. The PDM 28 has 28 individual circuits that can be used as needed.

If the circuit protection is tripped, the PDM can be programmed to automatically attempt resets. All circuits can also be monitored in real time and also datalogged for troubleshooting purposes.

Please ask specific questions and I am happy to answer them.

Andrew

My favorite mods. I'll talk to the people that notice, the true car people.

Happy New Year Everyone!

Andrew

Having a 3D scanner and a competent designer on call has really improved the overall quality of this build. I also want to thank Brian Wolf from Send Cut Send for helping out with this particular project.

I started with a 3D scan of the glovebox area without the glovebox. We obtained models of the Dominator and the Hardwire PDM from Holley and Hardwire and they were used to mock-up a mounting solution.

https://j.hmjimg.com/2025/01/13/GTOV3-1058.jpg

I wanted the LEDs on the PDM to be easily visible and I wanted the connectors to also be easily accessible. The tandem stacked arrangement is what we came up with.

https://j.hmjimg.com/2025/01/13/GTOV3-1059.jpg

James created the DXF files with SolidWorks and I uploaded them to Send Cut Send. They not only did the laser cutting but also the bending. Today I finally got the package after a bit of a delay due to the weather.

https://j.hmjimg.com/2025/01/13/GTOV3-1060.jpg

I expected to have to do some fiddling around with the bracket to get it to fit, but it dropped right in. The 3 holes that hold the glove box door lined up perfectly, as did the two slots up at the top.

https://j.hmjimg.com/2025/01/13/GTOV3-1061.jpg

I couldn't be happier with this solution.

Andrew

Nice. We use send cut send for prototype parts at work.

I am making slow progress. In the last installment I posted the bracket that will hold the Holley Dominator ECU and the Hardwire PDM. Today I got a care package from McMaster Carr with some hardware.

The Dominator case is not supposed to be grounded to the car chassis. It actually has plastic and rubber mounts that are already inserted into the case. However, to isolate it more, I used rubber nut threaded inserts. To fasten the auxiliary bracket to the main bracket I used U-nuts.

https://j.hmjimg.com/2025/01/18/GTOV3-1062.jpg

Here you can see how it all fits together.

https://j.hmjimg.com/2025/01/18/GTOV3-1063.jpg

Unfortunately, the holes in the PDM are too small for #10 screws, so I have to #8 screws and corresponding U-nuts. I used a temporary support for picture purposes. LOL

https://j.hmjimg.com/2025/01/18/GTOV3-1064.jpg

Andrew