Double checking why you are asking so we can help. Are the wires, relays, & solonoids there but not working? Or are you missing the wiring?
Thanks for asking. Everything was working fine. They both quit mysteriously (you know "italian spahetti wiring") I try a way to troubleshoot these things and a wiring diagram would help.
Probably not the wiring. These give 400 owners trouble all the time. Here's what to do: 1) check the connection at the fuse and clean it 2) do the same with the switch 3) Check & clean the connection at the solonoid. Bet you $5 they work now.
My pleasure. For the headliner try Mike at Ferrari service costa mesa. Do a search and you'll find his number. One of the other guys reading this probably has it. If he doesn't have it Ted in Atlanta just bought a bunch of NOS 400i stuff from a defunct dealer. The rumor is he also has a 400i that he is parting out. Haven't confirmed that yet. Fred Petrosky has 2 that he is selling parts from. If the above 2 don't have it let me know and I'll dig his number out for you.