I had a similar situation -the Rotax routing did not match the before pictures in the instructions. But after putting the mount on - there was a possible interference so I took the connectors off the support bracket (had to take both sides of all 3 off) and did it per the plans. The wires running from the sensors to the connectors are now good - the wires from the connectors to the main cable may need an additional tie wrap. I will defer that until the engine is in to do that.
Another change I had was that the molded radiator hose you are told to remove so you can modify the sleeve on it and cut it shorter - had no sleeve. Vans support indicated that was a Rotax change & that I did not have to remove it, just cut it per the later instructions.
Thanks - no interference on mine so I'm going to leave it until I see a problem I'm thinking. Wish I'd known that radiator hose info - that was a pain to remove - expecting it's no party to get back on...oh well. Good info anyway.