Originally Posted by
-beefy-
cracking car mate,
im wondering how difficult it is to run frs clocks in say a rst ?
whats invlolved in wiring them ?
beef
Hi Beef, cheers for the kind words
Yeah fitting the FRS clocks into an earlier Ford eg S1/S2 FRST is quite involved

It's perfectly possible though, with some money, time and patience
1. Firstly you need an electronic vehicle speed sensor (VSS) to send out a 26 pulse/driveshaft revolution - The FRS has an MTX75 which my car also uses so that part was simple as the Focus/Mondeo MTX75's came with that sensor fitted as standard.
2. The FRS dash gets the Speedo, Tacho & Boost gauge data from the SCP data bus that is basically 2 wires that go from the ECU to the dash (via the OBD II port). So doing what I did and using a Focus RS loom/Ecu is the best, most starightforward way.
3. If you're using wheels much smaller than the FRS 18" rims (I'm using RS2000 15") than you need to interrupt the signal wire from the VSS and connect it to a fequency modulating device or "speedo healer" (I'm using a Dakota Digital SGI-5) -they cost about £50 and let you program in whatever calibration factor you need.
4. You need to make the Fuel gauge read the correct way around - if you just connect a MK3 Fez (and probably an Escort S2) sender straight to the FRS dash then the Fuel gauge will read "full" when empty and will read "empty" with the warning lamp on, when full! I inverted the sender on the pump shaft so that the resistor arm moves the opposite way - now works perfectly
5. Finally, you need to remove whatever warning lamps you don't need (eg airbag, seatbelt ABS etc) or they will always be lit and irritate the hell out of you!
Hope that answers your question mate