MS1 CAN+ ,MS1 CAN - vs HS1 + ,HS1 -?

[SFRANCO (Hades)]

Hey everyone, I’m currently in the process of installing electric OEM running boards on my 2015 XLT. I recently obtained a set of OEM electric running boards from a 2023 F250. I have a “PRB” module from a 2015 F150 Platinum and the motors and brackets from a 2015 F150. I’ve already completed all the wiring, but I need to connect to power. My plan is to tap into the fuse for the moonroof since I don’t have one. I also need to connect to “MS1 CAN+” and “CAN-” and I’m considering tapping into the wiring harness from the rear right pillar. In the diagram, it indicates that the cables are grey-orange and violet-orange. I’ve located the wires already, but there are two pairs of twisted wires with the same color. How can I verify which wires are the ones I need, given that there are two pairs of twisted wires with the same description?

Also, I ran the wires from c2122 to be used with my retrofit TCU, which uses HS3 CAN + and HS3 CAN -. Can I use the wire from port c2122, cable 3 and 4 , which is medium speed CAN + and -? uploading pictures for refrences

[bill32399]

Odds are both those pairs are the same canbus.

[SFRANCO (Hades)]

are you talking about the data connector c2122 behind the obd connector? or the pillar cables from the rear?

[bill32399]

Pillar wires.

[SFRANCO (Hades)]

I want to confirm if I can use the high-speed CAN bus wires from the pillar even though the RBM requires medium speed. Or should I use the wires from C2122 cable 3 and 4, which are medium speed CAN+ and CAN-? What do you recommend?

[bill32399]

No you have to use the correct canbus for it.