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thin red wire 12v relay end and 1.2v at ECU probed either side till i found break. running but found a low rev missfire when moving off :(

anyone got the wiring diagram for one of these ? i have searched all over and keep reading the same request but never seen a download link !

thanks for the advice mick, what i need now is a pinout between UCH and SIEMENS SIM32 ecu autodata and tollerance only seem to show 2 plug schematics for the magnette marrelli systems

ok, so we bought the car with immobiliser problem. the previous keeper drove it home and it developed a missfire, got home and would not restart immo light is on solid and key turns the engine over for 3-5 seconds. no fuel pump priming when we clear fault codes it come straight back with...