OK, so I have put the pieces together, and ultimately found that these Apex bars are not going to work on an 03 RX-1, and keep my hands warm. As I loved the way they felt, it was not going to work.
SO, here is the skinny. First, the Apex bars
Combined resistance of 4.6 ohms. That means 2. 3 ohms per side wired in Series. This draws 2.61 amps of current at 12 volts (All the way high). Creating 31 watts of power or heat at each grip. This coupled with the large metal hook that goes inside the outer part of the grip 1.24 inches, and the fact that the grip itself is only 4.5 inches, means that I am not producing enough current/heat to heat the bars where your hands are. The spot where the hook goes into the grip heats up at a rate of 50% slower, and colder due to the large metal bar to heat inside it.
Second is the stock RX-1 grips.
Combined resistance of 3.3 ohms. About 1.7 per side, and wired in series.
This draws 3.63 amps of current at 12 volts (High). Creating 44 watts of power or heat at each grip or 40% more heat. The stock grips also have a 5.5 inch grip length shich allows your whole hand to be on heat.
All these coupled together, led me to a decision. Have cold hands or cool grips and bars.......
I chose warm hands... Not looking back. Anyone want a like new set of Apex bars and gripps off an '06?