Bugger! I forgot to bring the digital camera home from work - I'll take the solenoid in tomorrow and get a picture. The diagrams etc. I should hopefully have next week - I'll let you know and we can organise fax or mail details.
I fitted the complete EF manifold setup - including ducts and airbox - a couple of years ago (took about 4 hours), but then have been really slack about getting the switching operational. Basically, I've been waiting until I move back to civilisation before getting real serious - at which time I'll also have a UniChip installed etc. (ie. because there aren't eec tuner maps for I6's yet).
Right from square one I've planned on using the original BBM Solenoid and an aftermarket rpm switch of some sort. Finding both of those things has been surprisingly difficult - I never did find a wrecker or dealer spares desk who knew what the hell a BBM Solenoid was and only finally got one when I found out myself exactly where it was located in the car and then could give
that info to a wrecker.
I've finally managed to find an rpm switch that I think will work at VPW (www.vpwmailorder.com
). I haven't actually ordered one yet tho so don't know at this stage what extras will be required in the way of relays etc. or whether it will power the solenoid directly.
Another avenue I'm exploring is the possibility of getting an EL EEC5 - which it appears might be a straight plug in replacement for the ED EEC4 (as EL went back to Dizzy ignition) - that way it might be possible to tap into the BBM control line etc. - mind you, an aftermarket rpm switch would give the ability for adjustment of the switching point. I still don't know for sure about the compatibility of the EL ECU tho.