Aftermarket multiplex wiring parts

[Dvader]

I have searched all over and can't find any kits,etc. to wire up a complete car with multiplexing. Since I am starting from scratch, it seems like an interesting project to reduce the wiring complexety. I saw an article on a kit "super car" a year ago or so that supposidely came with such a wiring system, but I wasn't able to track down his source.

I am not sure of the cost justification compared to standard switches, relays, etc., but the lure of only one power line running around the car is pulling me.

 

[zimbali]

Are you making a new car, what engine does it have? Based on your engine, you need to use a specific ECU and that forces some specific sensors and so on. Unless, you wanna go for a Stand Alone ECU (one like Autronic) and then I'm not sure even there you'll have MUX compatibility.

Anyhow, Peugeot recently has used this tech and all 206, 306 and 307 (at least) have that technology. it reduces the wiring lenght but adds the complexity so much. Most of the tasks of sync-ing and stuff is with a unit named BSI in Peugeot.

As an example, you don't have a seperate wiring to water temp sensor to : a) instrument to show it b) ECU to adjust the injection c) to the fans to control their speed. Instead a single pair of wires go to BSI and then this unit sends required info to ECU, INST Control Unit and Fan Control Unit with already existing VAN (and/or CAN) network.

So, my conclusion is that sensors shouldn't be different as you need a SET of Control Units can talk on MUX protocol.

If u r making a new car, I would recommend NOT to use it and put your effort on other stuff like Engine and So on, Unless you wanna use a full MUX package with its associated Engine!


Cheers


You can live in your car, but you can't drive your House!

 

[Dvader]

Not new. Just completely rewiring an older Pantera with a non-computerized 351 Cleveland engine. Nothing trick except original lighting, gages, etc. I will be adding some hydraulic control solenoids and switches. I was hoping that someone had an aftermarket separate multiplexing unit with the switches and receivers. I suppose the cost of this would far outway the cost and time of conventional switches and relays (although it shouldn't). Maybe I am asking for more trouble than it is worth, and the reliability (and diagnosis of problems) wouldn't approach plain old copper.

BTW, I am a retired Automotive Engineer (Ford) with a good understanding of conventional electrical wiring and just a basic understanding of how multiplexing works.