Let's start with a refresher of what the DashBoss is and can do for the 6.0 PSD.
DashBoss monitoring review.
To keep cost down, I went with some of the cheapest parts I could find. Here is a list of parts I used to hook up EGT and Fuel psi.
K-type EGT probe, EGT 5v linear adapter/conditioner, 5v linear fuel psi 0-100psi sensor, the DashBoss pigtail, and some wires. Note: the 5v must be linear. Here is where I purchased the parts. Note: the egt probe I used was a leftover from DashBoss, but any EGT K-type probe will work.
EGT 5V K-type adapter/conditioner [EGT01] - $19.00 : 3rdBrakeFlasher, E-commerce web site
Auto Meter 5249 Auto Meter Temperature Probe Kits
Pressure transducer or sender,100 psi, for oil,fuel,air | eBay
Your gonna have to install the EGT probe into the exhaust manifold, and install the fuel psi sensor in the fuel psi test port. You can search the forum or internet for installing these onto your motor.
Take note, the DashBoss pigtail/wire has four wires. 2 white (grounds) and 2 purple (5v input). When holding the plug and looking at the plug with the locking tab up, the top white and purple wires are for external port1, and the bottom white and purple wire is for port2. This is important later on when setting up the DashBoss external ports settings later. Pics below.
Now onto the wiring, the EGT K-type thermocouple wires should be a red and yellow wire, which gets connected to a EGT 5v adapter/conditioner. Why? Because the EGT probe is a thermocouple and sends voltage as millivolt, so you need to convert/amplify the millivolts to volts. Now with the $20 EGT 5v adapter I used, the instructions they gave was very simple, red wire goes to the one lug and yellow wire goes to the other lug. The instructions show you which wire goes where, if your still not sure, on the underside of the EGT 5v adapter you will see a "R" and "Y" for each lug. I used a box to protect the EGT 5v adapter, this box is intended for in-line fuses. (see pics below).
The EGT 5v adapter also has 3 wires on the other side. You have a 12v power source (red), a 5v output (white), and ground (black). I ran the red wire to the fuse box and found a 12v "ignition on" power source. The white wire goes to the DashBoss pigtail purple wire. Now for the black ground wire, I found out the hard way that when this wire is connected to a ground source or to the DashBoss pigtail white ground wire, it causes a "ground loop" and caused my EGT readings and volt input to be extremely high. After figuring out what caused the high readings, I disconnected all grounds going to the EGT 5v adapter. SO YOU WILL NOT USE THE BLACK GROUND WIRE or the WHITE GROUND WIRE on the DashBoss pigtail.
Now for the Fuel psi sensor, the sensor has 3 wires. Red is 5v input, Black is ground, and Blue is 5v output. The Red wire need to be hooked up to a 5v reference power source, lucky for us that the 6.0 has several OEM sensors to tap off of to get a 5v input signal. I tapped off of the EGR valve plug/wires. The EGR valve plug/wires has a brown with white tracer wire, this wire is a 5v reference wire that will allow you to provide 5v to the Red wire on the fuel sensor. The Black wire I ran from the sensor to the DashBoss pigtail white ground wire and also spliced off to ground to the chassis/body of the truck. The Blue wire goes to the DashBoss pigtail/wire that is purple (5v input). Pics down below.
After all your wiring is done, you'll need to open up the DashBoss app and set up the analog volts (5v) to read digital. Go into "config", scroll down to find "external ports 1&2". I have external port #1 for my fuel psi, you need to set up the external port pressure to match the low/high volts of the 5v sensor your using. I found this info from the manufacturer of the 5v sensor. For this sensor set up I put in .5v=5psi for the low setting, and 4.5v=100psi for the high setting. Pic down below.
I also set up the EGT, using port #2. The low setting was 0.1v=100*F, and high setting 5v=1600*F. Pic down below.
For more details on setting up external ports in DashBoss, check out there videos.
DashBoss / Video Tutorials
Total cost for the external port additions was $104.50 before shipping.