The fuse box is located directly behind the brake booster {giant round thing that connects to the master cylinder} and you have to unscrew both nobs inorder to open it. It is alittle tricky to get back into place but after some fiddling with it you should be able to get it. The tempature dials are for the left and right passengers with the middle being the fan control. Adjust them to your likeing.
Mike

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81 240d