.....somewhat unfamiliar territory as it's time for me to start installing the wiring harness and controller.
The engine harness part of it is pretty straight-forward, just match up the connectors and plug them in. Figuring out the best place to mount the bulky ECM is a bit of a challenge, there's pretty much no room under the dash for it with the A/C unit and ducting hoses taking up most of the space on the passenger side.
I laid out the harness inside the car to start becoming familiar with it. Everything shown here on the passenger side floor will be on the inside of the firewall. Included is the ECM, pedal harness for the electronic throttle control, fuel pump relay, cruise control wiring, and four 20-amp fuses and power up wires.
Here on the driver's side the engine harness is laid out. All of the wiring and connectors shown here will have to pass through a 2-1/8" hole in the firewall. Finding a good place to cut that hole is my first task.
After taking the harness to the engine side of the firewall and plugging it into most of the connectors on the engine and transmission I was able to figure out a good place to run the harness through the firewall. The hole where the throttle cable used to reside looks pretty much ideal.
After marking the outline of the 2-1/8" hole using a piece of 2-1/8" O.D. exhaust tubing (2" pipe expanded for a slip fit over 2" pipe) I drilled a series of small holes just inside the line.
A sharp chisel was used to make quick work of the material that was left between the holes, a half-round file finishes off the edges.
My next dilemma, how to go about getting the harness through this grommet and proerly sealing the grommet to both the firewall and harness.
Clearly the harness can't fiit through the grommet without cutting the I.D. of the grommet. The big harness junction shown here would take about a 1" hole stretched out to 1.5" at the very minimum to pass it through the grommet, the grommet only has a 5/8" hole in it.
What to do? Cut the hole a little bigger and try work the entire engine side of the harness through the grommet, or slice it down one side and just slip it over the main cable bundle. Even if I slice it the 5/8" hole still won't be big enough for the 15/16" diameter main cable bundle to pass through.
Any opinions or personal experiences would be much appreciated.
Made a little more progress this weekend, thanks for looking!
