On canopies yes, and done the hard yards using other brands over the years. On batteries not really, between the old man and I we've been doing all our own auto elec (and 240v) work for years, trial and error (with a good dose of practical theory) is our guide.
As far as ringing me that's not really an option. For the next 6-8 weeks I'm in the middle of a huge IT refit for a client and don't have the time for much else for a while. The only reason I'm online is because I insist all clients provide me with net access while on the job to solve any issues that may arise, so if you want any questions asked feel free to PM me and I'll get back to you during a lull in proceedings but I'm afraid thats the best I can offer for a while.