Daisy chain explained please?

They sell add on boost gauge kits a pitt. power, but its just a gauge with a plastic line leading from intake to gauge, easy to install if you found a gauge at the junk yard and bought some line to hook it up nothing ele. is is needed

 

Perhaps jumper a power and ground wire over to the gauge to light it up with the rest of the gauges, but other than the gauge, airline, and fittings to connect to the intake, you don't need anything else. Mechanical gauges are nice like that...

 

easiest way is to buy a Scangauge D. You will have boost gauge and many others to. Setap is 5 minute , no additional wires, sensors,....

 

Daisy chain: one set of wires operates all of the gauges.
I believe on a Cascadia it starts at the tach, then the speedometer, then in series to all the other gauges all in a row, one after the other. You are free to re-arrange the gauges any way you wish, they are all computer coded and only pickup the information they are particularly looking for out of that set of wires. Only some of the air gauges work independently.
The very last gauge on the line may have a terminating resistor plugged in after it.

 

If there is a spot for it, it will probably plug in. They just read the data off the bus.

@mhyn ... the scan gauge on my Cat-powered Columbia only goes to 31.5 lbs of boost and then stops. I know for a fact the max boost is almost 50 lbs because I also have a mechanical gauge on it.

 

You should be able to find the wiring schematics somewhere, beats guessing. I have mine for the ProStar.

 

Daisy chain simply means that all your gauges are hooked to the data link. All of your gauges have 2 plugs, in/out. The wiring simply jumps from gauge to gauge so they are all connected on the same wires. It does not matter what order they are wired, they all get their signal from the same data link. To add a factory gauge, you need to find the last one in the "daisy chain" (the one with only 1 plug) and run a jumper to the new gauge. Then you need someone with the ServiceLink software to activate it in the SAM module for it to work. Some gauges would require a sending unit added (common with trans or rear temps, pyro's, etc.) and wired to the SAM. But a boost gauge would use the boost pressure sensor that the ECM already uses. The SAM would just need to be programmed to transmit that data to the gauge.