Correct... (and it's not just me - the Mopar wiring diagram calls them #1 and #2, too

)
And, just to re-confirm... my Mobilistics relay (dressed up as an OEM relay) is currently sitting in K06 socket - diagram from the wiring manual here:.
View attachment 33382
The manual calls K09 starter (relay) #1, and K06 starter (relay) #2, as seen here:
View attachment 33383
The wiring diagram I posted on the previous page shows the common terminal of relay #1 draws power from Fuse #F40, straight from the battery. It shows relay #2's common terminal gets power from the N/O terminal of relay #1 - so relay 1 powers relay 2. I'll re-post the wiring diagram here, so everything is in one spot:
View attachment 33384
Note that I have not actually confirmed the above with a voltmeter... I'm assuming the wiring diagrams are correct. But, given my attempts to start the truck with the relays in both positions, I have no reason to doubt any of the above:
With the Mobilistics relay in the K09 socket (relay #1), the truck would start either way:
- Press button on Mobilistics transmitter, then step on brake, push start button.
- Step on brake, push Start button (nothing happens), THEN press Mobilistics transmitter... truck starts.
That works either way, because in the K09 socket, the relay gets constant power.
With the Mobilistics relay moved to socket K06 (relay #2 position), the truck would ONLY start if you do the following:
- Step on brake, push start (nothing happens), then push Mobilistics transmitter - truck will start
The above happens because the K06/starter #2 relay is only powered when the K09/starter #1 relay is engaged.
I think I like the fact that it's a little more complicated in the #2 position... if you don't do the whole sequence in the right order, no start for you.
Whew... I think the horse has sufficiently been beaten into a bucket full of glue.