chasmosis1
Active Member
Obviously I'm new here, however I am far from new to the scene. I am actually in the process of installing an 04 Ram 5.7 into a Jeep YJ. I am going to build/modify the factory harness myself. I have already identified all of the needed pinouts with the FSM. I am using an AX15 connected through a 3.9 bellhousing. Question is whether I need the speed sensor signal for the PCM or is it strictly for shifting the trans? I would like to completely remove the C4 connector, but want to confirm that the speed sensor is unnecessary. I will either be using the AX15 speed sensor to send the signal to the factory electronic dash (using a 5v signal from the 5.7 PCM) or I will use a cable driven speedo. Programming is not an issue as I have the equipment and knowledge for that and will be shutting off the trans, rear O2's, & EGR. I am seeing nothing in the PCM that would require the signal, but I also know that today's programming only shows a limited portion of what the Dodge PCM is capable of.