The Ford Sierra is a large family car built by Ford Europe from 1982 until 1993. The following and electrical circuit/schematics apply for Ford Sierra Cosworth 1991 model year. Here you will find detail illustration of the electrical system circuit and of the Sierra. This manual covers discussion on signal and warning system including trailer lights (turn indicator, horn, hazard warning, reversing lamp, starter inhibitor switch for automatic transmission, warning lights for handbrake and brake fluid level), starting and charging system, engine management, exterior lamps, front and rear fog lamps.

Find more information about Ford Sierra Cosworth here. (source:

Useful links to download:

    Speed 1254 kb/sFord Sierra Cosworth Wiring Diagram (1991)

   Speed 8987 kb/s[Verified] Ford Sierra Cosworth Wiring Diagram (1991)

   Speed 2547 kb/sFord Sierra Cosworth Wiring Diagram (1991) Direct Download

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