A surprising number of connections to both the radio modules but they are digitally tuned (perhaps part of the code key is the selected frequency) so that requires at least 3 more wires. Dual conversion receiver by the look of it, text book design with lots of discreet tuning and what look like standard IF filters. The Plessey SL6652 is a IF mixer and FM demodulator. GPS=GEC Plessey Semiconductors The NJ88C30 and NJ88C50 are Frequency synthesizers so the NJ88C40 is probably similar.

We learned to rebuild the caliper in school long ago using a small hone and a rebuild kit. If the piston was damaged/scratched, it was replaced otherwise, the brake fluid would leak past the square O ring and the side of the piston. Discolored rotors are a great sign that they've been overheated by dragging pads. Thanks for the video. 😊

18:15 M57732 Mitsubishi Power Module 7W 144-175 MHz, $32.91 In Stock. All off shelf parts.

Stickers can often be removed relatively intact (sans some of the glue) with a utility razor blade....

Its pretty amusing that it uses a fairly generic PIC chip in there. It likely controls the firing press sequence that if good then it transmits the code. I have a feeling the code plug contains a small prom chip, probably the same type used for special functions enable on industrial equipment.