by Speedytec » Sun Jun 01, 2008 4:11 pm
Hi all,
I do not own an Atom, but as I am planning to swap an LSJ engine into my Opel Speedster (= Lotus Exige derivate), we will be "cousins" in a way.
I am now busy with planning the wiring. I have the GM LSJ P12 diagrams but run into a some problems with the dash wiring as the Cobalt & Redline instruments are driven through the OBDII.... But as the Atom uses a Spa dash, you guys maybe have an answer for me on these questions:
How is the Atom LSJ RPM signal pick-up done? 0-5v signal from the PCM? Which pin? Or direct pulse pick-up from the ignition??
How is the engine water temperature signalling done? From PCM (pin?) or through a separate sensor?
Thxs.
Hi all,
I do not own an Atom, but as I am planning to swap an LSJ engine into my Opel Speedster (= Lotus Exige derivate), we will be "cousins" in a way. ;)
I am now busy with planning the wiring. I have the GM LSJ P12 diagrams but run into a some problems with the dash wiring as the Cobalt & Redline instruments are driven through the OBDII.... But as the Atom uses a Spa dash, you guys maybe have an answer for me on these questions:
How is the Atom LSJ RPM signal pick-up done? 0-5v signal from the PCM? Which pin? Or direct pulse pick-up from the ignition??
How is the engine water temperature signalling done? From PCM (pin?) or through a separate sensor?
Thxs.