Liquid electrical tape is amazing stuff. The kind for pond pumps is amazing. You can splice wires under water and that stuff really does hold up. Using a sealant such as “Quad” or a very high quality silicone, and cleaning the wires and plugs area with a serious degreaser, it will be water tight for 15-40 years depending on how well it adheres. Also a side note is the knock sensor is nothing but a microphone. It grounds out to the block inside the unit itself, thus sending back a signal. Just keep the wires from touching and touching the block and they will work just fine. If it does ever truly fail it will send your car into limp mode of the ages. One other caveat is that the super early sport models actually had the incorrect computers used in them. They will use the three wire knock sensor off of the same or earlier model econolines with the smaller v8 options. Ford says it doesn’t exist. And even the after marker people they use do no have the “ability” to source the part. I’m 100% sure it works. I hit 6k rpm daily in my truck without missing a beat. I was misinformed that all 3 wire knock sensors are actually Hall effect sensors. This is not correct as the assembly of the knock sensors is identical with both being the “pizzo” electric type or whatever it’s called (microphone).
