Jamesn Posted April 2, 2023 Report Share Posted April 2, 2023 Hi guys, I am installing sensors on my link g4+ atom and i have a few questions. My first one is that looking at picture i have attatched there are wires on my plug in truck that are in the spaces with no wires/or words. Does this make them unusable with my ecu or are they usable for something that isnt listed like a spare an? Which brings me to my second question is that i have a spare an volt 2 wire which is the only one left free am i able to splice my 2 sensors into that one wire or is there another place that i can use for one of them? Also i have the wires Dl 1 and Dl 2 avaliable what are these wires for? And my final question is adventually i will get an oil temp sensor to wire in where abouts would i wire that into also? Many thanks and happy to elaborate on parts if need be. James Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 2, 2023 Report Share Posted April 2, 2023 The Atom is a stripped-down ecu designed for minimum cost and very basic applications. It has more basic software/firmware with many advanced functions removed and some hardware removed. The empty pins have no connection/no function. It only has 2 temp inputs and 3 analog inputs. If you only have one analog input spare then you can only add one further sensor directly. It is possible to use a 3rd party CAN bus module to bring in oil and fuel pressure, AEM have one as well as ECU master. DI 1/2 are digital inputs, they are used to connect things like switches (hi/low boost etc) and speed sensors. Quote Link to comment Share on other sites More sharing options...
Jamesn Posted April 3, 2023 Author Report Share Posted April 3, 2023 Thank you for your reply, now knowing the atom was a very basic ecu i probably would have gone for a bit better one with more an outputs but that was 6 odd years ago and just took it to a shop to get a link and get it running. Does the job tho so wont change it. I have a powertune digital dash and have noticed they have these can i/O extender. Will this work in the case of being able to view my pressure readings through the dash but not on the link? And im guessing i would just splice the can high and low wires into this and the dash? James Quote Link to comment Share on other sites More sharing options...
Adamw Posted April 3, 2023 Report Share Posted April 3, 2023 Yes you can use a CAN analog device such as the power tune one and the ecu can receive the sensor data from it. G4+ CAN inputs are quite limited but you are lucky in this case as oil and fuel pressure are a couple of the limited few parameters that can be input from CAN. Oil temp cannot be received via CAN so I would suggest wiring the oil temp sensor to your spare ecu analog input, you will need to add your own pull-up resistor as per picture below. Quote Link to comment Share on other sites More sharing options...
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