Before I start stripping the harness down to the essentials I need for the merger, I would like to address a few things. My main concerns are as follows.
The 1999 system has a fuel temperature sensor in the tank. Do I need this for the engine to run properly or can this pin on the ECM be left floating or tricked with a simple resistor? Advantages of knowing fuel temp in the tank?
The manual transmission version uses a speed sensor signal to the gauge cluster and to the ECM. It appears to be driven from the same place in the transmission as the speedometer cable in the 1987. How do I incorporate this sensor into the 1987 D/R transmission? The speedo gauge is not as important, as I use GPS for a speedo with the bigger tires, but it would be nice to get this to work so I can use the stock cruise control. My thoughts were to drive the cable with a servo and simple PWM circuit driven form the speed sensor signal. This isn't as important as getting the engine running properly in the 1987, though, so lets focus on getting the speed signal to the ECM.
Edited by kanurys, 04 January 2012 - 03:37 PM.