Here is the response from Steve Mahon with SMI.
Don,
In regards to your E-Mail, The location of the install is acceptable. This location is often where we install as well. You should not have any problems due to heat. It is good to hear that your system is working well, and you enjoy it. If you ever need anything in the future do not hesitate to let us know,We are happy to help.
Please feel free to contact me with any future questions or concerns.
Regards,
Steve Mahon
Customer Service
800-893-3763
steve@smibrake.com