Bare Essential Wiring | Basic PDM Setup
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- čas přidán 29. 06. 2024
- Ripping all your OEM wiring out and starting from scratch is a common wish, but is often seen as a daunting task when it comes to deciding what a 'bare essential wiring' setup looks like.
1 of 36 modules from the full PDM Setup and Configuration course: hpcdmy.co/pdmuyt
Using a street legal track car as the example Zac runs us through his 'bare essential' wiring list and how the ties into your PDM setup, with a quick note on how your ignition key actually works so you can ensure you wire the right components to the right pins with a full understanding of why.
NOTE: Our laws might be different so this is just a guide, not an instruction on what YOU do or don't need legally, and of course if you have a track dedicated car your rule book is what you should consult regarding requirements, particularly lighting.
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WHAT IS A PDM?
A power distribution module (PDM), power management unit (PMU) and power distribution unit (PDU) are all the same thing with different names, much like how variable cam control is called something different by each different car manufacturer.
Over the last few years we’ve seen PDMs become more popular and more affordable which means we’re seeing them pop up in more and more cars running at the grass roots level. These units replace the conventional fuses and relays we need to control and protect the various electrical circuits on our car with solid state electronics to control current flow. This dramatically simplified the wiring installation and can also improve reliability. With a conventional fused circuit, if the current is excessive then the fuse will blow to protect the components and you need to stop and replace the fuse to get going again.
With a PDM the fusing current can be adjusted in software and the unit will simply shut off the circuit if the fusing current is exceeded. The smart part however is that you can then configure the PDM to wait a specific amount of time before retrying the circuit that just failed. You can also set how many times the circuit will retry before failing permanently. This can often be enough to nurse a car with a failing electrical part back to the pits for repair. It’s also possible to log and display the current draw on each circuit so you can see exactly what’s going on with every part of the electrical system.
At this point a PDM is still going to end up more expensive than using fuses and relays but when weighing up options most enthusiasts overlook the cost involved with mounting and wiring the relays and fuses. When you factor that in, upgrading to a PDM often isn’t going to cost substantially more and by the time you consider the advantages it can start to look pretty attractive.
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TIME STAMPS
0:00 - Minimal Wiring: Theoretical Situation
1:37 - Device Example List: hpcdmy.co/pdm-example-list
2:27 - Sensors - ECU Is Separate
2:53 - Current Draw - Generic Values
11:37 - PMU/PDM Inputs & Control Functions
12:15 - [SIDE NOTE] Ignition Operation
17:00 - Back To Inputs & Control Functions
17:25 - Starter Solenoid
17:29 - Fuel Pump & Cooling Fans
17:50 - CAN Bus Communications
18:13 - Lighting - Indicators, Hazard, Dip and Full, Brake, Reverse, License Plate
22:07 - 'And' Function Usage
23:02 - Wiper, Washer and Horn
23:42 - Hope This Helps!
24:02 - Link Below (Lies! It's actually above)
24:15 - Just A Small Bit Of Knowledge From A Full PDM Course
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#highperformanceacademy #pdm #pmu #pdu #enginebuilding101 #dontletthesmokeout #wiring101
#powerdistribution #powermanagement - Auta a dopravní prostředky
HI, great video, learn a lot. I think that the hazard switch should work with the ignition switch in the off position
Every second is priceless as always. This will greatly help with our build! Thanks for putting out quality content every time
-Tomaz
Can't wait until my project is to the point I need this course
Been using Ecumaster PMU-16 in my racecar for over 4 years now. Its the best upgrade I ever done. So easy to use aswell!
Thank you, the video I was looking for. Well put , simple and clear
Perfect, glad it hit the nail on the head for you dude! The course is the same, to the point with what you need, if you do find you are after more knowledge on PDM setup etc 😎 - Taz.
How does this man speak english in such a proper manner i get teleported to 18th century aristocratic party in England. Cant wait to finish this class.
He's Australian tho 🤨...
@@SouthernSpeedVideos nearly. He is a New Zealander bro
Generally, I have my accent described to me as 'Pretentious Plonker', but 'Aristocratic' works too I suppose! ;-).
Thank you. Excellent and helpful content
You're very welcome!
Great video I was thinking of getting a 15 output pdm for steet car but now thinking it's not enough outputs
yeah.what a breatthaking video- 👋
Talking about the brake light situation wouldn't you want the same for the hazard button.
I know it's the same circuit as indicators but is it different logic of not requiring switch power to run
How would you do the outputs for the retractor headlights?
I read that the ign 1a coils can use alot of amperage. And some guys are using a 30a relay for a set of 3 coils. So is it safe to use 2 high current on the pmu16 for 6 coils in a 2jz? Or all coil can just be on a single high current output on pmu16?
So I have pretty much all of those ancillary outputs, and looking at a Haltech PD16...how do I get that functionality with just 8 8A outputs??
Always wanted to do something like this on my FD RX7 but I still want all the stock things like stereo and power windows,
16 and 32 channels just won’t be enough to do this and I think it will be more hassle than it’s worth right now.
If a PDM ever turns up with enough channels to run a entire car such as the FD I would definitely be interested but not quite there yet I don’t think
You can have several devices on one output provided you want them powered under the same conditions and that you don't exceed the channel current limit.
Not sure if that helps, but food for thought - Taz.
@@hpa101 it does help, almost like a daisy chain system. I imagine that would get incredibly expensive though for a weekend warrior car. Maybe in the future
@@BurpleRX7 no daisy chaining. Just wire in parallel.
Does the PDM course also shine some light on how to install the PDM? I've checked the manual for the one i have my eyes on, but it all looks a bit like black magic to me. Im not sure how deep your course into it, but with basic wiring understanding, will i be able to fully install a PDM into my car myself after watching the course?
With basic wiring understanding yes. We cover everything you'd need to know in the Wiring Fundamentals and Club Level Wiring course in order to install your PDM. It is straightforward with that knowledge.
The course does focus more on the setup of the PDM rather than your harness for it.
There is no harm in diving into it, and if you find you are out of your depth with the wiring side of things taking the step back to the other courses if required, and we can also help you via the members only forum as you go noting we don't do any of the work for you, we just guide you through any roadblocks you come across as you learn and implement the knowledge 😎 - Taz.
@@hpa101 thanks for your reply! Maybe this is something I want to dive into during next winter stop 😊
Quick question, could I also power my factory stereo harnes) with a PMU or PDU in my 370z (I might also be adding a multichannel amp to my stereo harness) while retaining my factory start button?
amps usually have remote wire option as is with radios already having a provision to enable remote.
So id say the amp can stay removed from the pdm system as youd have the amp directly powered from the battery/charging circuit with the remote wire enabling the amp not requiring any intervention from the pdm only thing to be powered would the the radio itself.
Would you like to include electric windows aswell
If you have/want them, yes sir! This is just a rough example, not exactly what everyone could, should or might want to do - Taz.