Originally Posted by BigO
Before reading Slow Drag On post, I spliced the tach wire. I had some very small butt connectors (about 24 ga.). It was very difficult getting a clean cut through the inner insulation without cutting the small conductor wire. Then worked the ground wiring back over the connecter and heat shrink. Tested....no help.
Called Garmin and ordered a new deck mount/tach cable.
If I was not to use a butt connector, how would you splice the cable?
Would you solder the wires?
Yes, for that soldering is the only way to go. My personal primary reason for not wanting to use butt splices is corrosion. If not sealed up, that little tiny wire and shield will get eaten up by corrosion very quickly, and once it starts, it just races down the wire.
I should also say that with the broken wire shield, two things can happen:
1) the rpm signal is being radiated from the break. This can cause RF interference with other electronics.
2) it is a place that other RF can be picked up and brought into the autopilot, confusing the rpm reading.