The end of the Plug and Play MIMA, and MIMA2
MIMA introduction
MIMA Operation
MIMA Users Page
Installing MIMA with The Plug and Play harness
Installing MIMA with the pin replacement harness
The MIMA Joystick
The MIMA Display
The FAS system
Cable impedance problem with last MIMA systems.
Installing the resistor
Beefing up the ground path
Why the cable effects the pulse
The real pulses
Learning to drive with MIMA
Hardwired Harness
Theory of Operation

Installing the resistor

Installing the resistor
Adding the pull up resistor

The MCM plug in adapter board in the rear of the car is where we will do the modification.
Start by uncovering the pc board just below the big grey connector.
Removing the label can be easy or hard, depending on how well the hot glue fused to the fishpaper and board. I have found that the fishPaper will unstick if you wiggle and work it loose, and the hotglue on the PC board can also be lifted off the board in most cases. A heat gun is a messier way to gain access, but can be used as a last resort.
The exact position of the two connection points can best be seen in the photo of the PC board artwork at the top of this blog.
The resistor can be any 4.7K 1/8 to 1/4 W resistor.
Bend the leads at a right angle, and tin the cut off leads.
The attachment points will also want to be freshly tinned.
Finally solder the resistor to the two points, being observant that you do not bridge the two close traces to the top resistor tie point.
After a close visual inspection, stabilize the resistor with a dab of hot glue, and also fold the fish paper cover back over the board and resistor, and plug it back into the car, and your IMA problems should go away.