pcmhacking.net

im not sure about the inhibitor switch, but inside the gearbox there is the range selector switches, which can tell you which gear you are in. you could tap into those wires with a controller of sorts and find the current gear, then push that number to a display. see this: http://pcmhacking.net/forums/viewtopic.php?f=31&t=3033 I was mucking around making a fully manual gearbox controller, to use in a drag car with shifting buttons on the steering wheel. you can see on the 2nd page of that thread where I coded it to display the current gearstick position on a 7 segment display.

also given the PCM knows what gear you are in, you could also use some sort of ALDL logger to display the gear position straight out of the data stream from the PCM onto a display of your choice. dispalys like this already exist, VL400 has made one and other places have aldl logger displays for sale as well.

Bloody hell mate your a champion. I need to run a display be it mechanical or electronic to show what gear I am in for engineering. I am running the 4L60E off a column shift (although dream of hidden push button auto) to keep the FC interior looking standard and not have to floor change with a bench seat.

I bought a Tech2 so going to match the PCM to BCM with that, when it arrives. (Will clear my srs fault in the VZ too)
Also keen to find out why the memcal type was asked?


By the way, MASSIVE thanks to all you guys for helping too. It is appreciated

FYI VS utes came out in a three seat column shift with a mechanical gear indicator in between the steering wheel and the dash.

Helical wrote:FYI VS utes came out in a three seat column shift with a mechanical gear indicator in between the steering wheel and the dash.

Funny you mention that, I actually installed that exact column but it looked like crap. Didn't suit the theme and certainly looked out of place. I also didn't have room for the mechanical rod style shift and have gone to a cable setup and a HZ auto collapsible column which will take the FC steering wheel with no plastic shroud.

Awesome electronic changer on the link above too!
Making any more

not sure lol this was more of an experiment also there are a lot of drawbacks, like no auto shifting at all... must always shift via stick or buttons. also shifts are pretty hard as I dont contorl the line pressure on my setup, I just leave it full bore.

Jayme wrote:not sure lol this was more of an experiment also there are a lot of drawbacks, like no auto shifting at all... must always shift via stick or buttons. also shifts are pretty hard as I dont contorl the line pressure on my setup, I just leave it full bore.

Any way to make it just a slave to advise the gear (incl PRN)?

yeah an arduino on its own could do that.... jsut connect a 7 segment display to 7 pins and piggyback off the 3 range selector switch wires. I dont "think" an arduino reading the range switches would affect the pcm, but would have to give it a shot to be sure.
but you would have P,R,P,4,3,2,1 (the range selector switches cant differentiate between Park and Neutral) . also it doesnt work while the engine isnt running, as the range switches dont read the gearstick itself, they operate by reading the oil pressure in various oil galleries to figure out where you have must have placed the stick. no engien running = oil pressure = no gearstick position indicator

Jayme wrote:also given the PCM knows what gear you are in, you could also use some sort of ALDL logger to display the gear position straight out of the data stream from the PCM onto a display of your choice. dispalys like this already exist, VL400 has made one and other places have aldl logger displays for sale as well.

Def the easiet way with the BCM and VT PCM installed. Just be to have an arduino sit on the ALDL bus listening to the messages and display them (could have it display all sorts of info if you wanted).

In the pic posted here .. http://pcmhacking.net/forums/viewtopic. ... 208#p35448

The message 2nd from the bottom ($41,$63,$00...) has the gear information in it.

nes304 wrote:Also keen to find out why the memcal type was asked?

Was to find out why the flashtool didnt detect a factory VT V8 PCM. Have fixed that in v1.44 which can be downloaded here .. http://pcmhacking.net/forums/viewtopic.php?f=3&t=82

Bugger me I'm gobsmacked with what you guys have done. Even releasing a new version OSE and here is what I have I know what arduino is but its simply way above me. I am more of an ol knucklhead guy. Very interested in what you have VL400 that will display the info from the PCM, but it must remain kind of hidden to keep my interior looking standard


Hey JAYME I have a mate who owns a sheetmetal shop, Cad design a shroud of some sort and i'll get it knocked up for you (or you can jam it in the "set" button hole in the centre of the dash)