RPM/Tacho signal needed for plasma gauge - Vectra C

[caveman_nige]

I have a couple gadgets fitted that I would not mind getting 100% working..

The main one is a plasma rpm/tacho function on my boost gauge..

The car is a 2005 Vectra C with a modified Z20NET engine (same as the B207R in the Saab 9-3 Aero)...

When can i get a rpm pulse to splice into that will not knock out the dash tacho..?

I will not do this myself but will need to direct the auto electrician to the correct source..

[fes_786]

u will need a can pulse converter i think speed pulse is from abs and on can network

basically the exact same thing taxi drivers use for their meter

the pulse wire from converter box u hook up with the gauge

[caveman_nige]

ok, i see where your coming from... i don't suppose you know of any.. i can't find any that say they do an rpm signal

[z786]

maybe this?
454T Alternator RPM Monitor / Tach Signal Generator | eBay (http://www.ebay.co.uk/itm/454T-Alternator-RPM-Monitor-Tach-Signal-Generator-/320623130331?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4aa6a0b6db)