I'm trying to get a BuildCraft gate to tell me if a Thermal Expansion energy cell is full or not. When I put a BC pipe next to the energy cell then put a simple gate onto it, then there aren't many options in the gate's left-hand box: one possible input is whether there's a redstone signal and the other is if energy is traversing the pipe. In other words, it's not reading the energy cell next to it. I've tried different sorts of pipes: a cobblestone structure pipe, stone conductive pipe and wooden conductive pipe. When a gate is attached to any of them, the input options are limited.
It looks like the pipe isn't connected properly to the energy cell. Is that the problem? Here's a screenshot:
I'm using FTB Monster Pack (with a few mods disabled), version 1.05 for MineCraft 1.6.4. BuildCraft is version 4.22; Thermal Expansion is version 3.0.0.2.
What am I doing wrong? Please help!
It looks like the pipe isn't connected properly to the energy cell. Is that the problem? Here's a screenshot:

I'm using FTB Monster Pack (with a few mods disabled), version 1.05 for MineCraft 1.6.4. BuildCraft is version 4.22; Thermal Expansion is version 3.0.0.2.
What am I doing wrong? Please help!