Step 2: The ignitor.
I put mine about 8 inches from the end cap. Close enough to work on. It is a replacement barbeque ignitor that comes with a AAA battery powered ignition switch. I sealed the holes with silicone. You can bend the wire electrode until you get the gap that's right for you. On the outside, I reinforced and protected the connections with epoxy, since they are a little fragile for this application.