Working on installing the C30 seats. The rails are about 2" narrower than the 740 rails. Not enough to be able to fit brackets on the outside of each rail, and be able to get bolts through. I set the seat position based on the inboard rail, drilled a mount hole through the rail to secure the inner rear corner. After that I was able to square & level the seat, fabricate mount ears for the other three corners, attach the seat belt reel, and get the DS seat bolted in.
Tried to get the memory seat module to operate - it wants CAN I/O, which I can't provide
So, I stripped the seat down & hardwired the fore/aft motor to allow me to set the mount points
Rail offset to the inside allows me to fit mount brackets
Spacing on the inside, clears console
Using the 350Z seat rail mount remnants that I cut off when installing them in the 280Z
C channel for the forward outer, wanted a reasonable overlap section onto the rail for welding
Tab cut from the stock C30 rail mounts for the forward inner
Belt reel fitted with minor mods
Notch outer seat panel to clear belt reel
So the tricky part of this install is going to be the wiring. I have to figure out how to bypass the CAN controller aspect & power the switches / relays so that the stock switches will operate the seat. I don't really care about not having the various memory options.
Googling ways & means of either emulating(?) the CAN signals, or bypassing it all,
I found this thread on Matthews Volvo Site. Pretty helpful, difference for me is the Seat module is more complex than that earlier one from an S60. Simply bypassing the ground relay is more complicated.
I used Google Lens to look up the relays on the board -
with that I drew out the relay schematic, and used my multimeter to determine the switch connections. I don't know which is (-) & which is (+) on the connected pathway illustrated at the bottom
Any suggestions welcomed!