This installation documentation is an alternate for the Intermountain F3A/B, F7A/B, and F9A/B. This installation uses the IMF4 decoder, and was performed by TCS.
NOTE: This installation should only be used if your model does not include wires from the motor. TCS recommends installing these wires for best results. For an overview of the installation process, click HERE
NOTE: This documentation shows the installation process for the 'A' unit. The installation process is the same for the 'B' unit, with the exception of the headlight wiring.
Please do not use any flux either liquid or paste on the mother board. It will damage it. Use only Rosin core solder approved for electronics use.
We recommend to use only Kester "44" rosin core, SN63PB37, .015" diameter, part number 24-6337-0007.
This can be ordered from Techni-Tool under Techni-Tool part number 488SO157
When stripping wire, only strip a tiny little bit of the insulation. Strip no more then a 1/64 of an inch. When the wire gets tinned with solder, the insulation will shrink back more. Try to not expose any more wire then half the length of the solder pad at most. In no case should solder or exposed wire wire ever be outside the boundary of the the solder pad you are attaching a wire to.
Click here for important information on properly Stripping and Tinning wire