The tach in my car only goes to 7k, and i really dislike the good ol’ 5" 10k tach however, I’m looking to install a 5" tach in my car in a removable fashion. I’m thinking about plugs on the dash that can simply be plugged/unplugged to mount/unmount the tach quickly, and without much hassle.
My thought was to use either stereo or mono 1/8" audio jacks for power/ground and tach signal to the tach, that way the female ports can be mounted into the dash and easily unplugged and not look terrible.
can I put power/ground through these 1/8" audio jacks?
yes to answer the question you can do that but i would not go with a 1/8 mabye thing a remote control car batt plug (get it at radioshack) … or a rca… just dont use a 1/8 IMO
Just connect it to accessory power, and only connect/disconnect with power off. I doubt a tach. would draw that much current, and a 5A or 1A fuse to it.
yeah the problem is that you are going to short the contacts everytime you plug/unplug it. I would go with a side by side plug. Somebody mentioned the type of plug that is used for R/C Car batteries. That is a really good idea.
As long as the engine is not running when you pull it out or plug it in you should be fine if the tach signal wire and ground touch. Just make the tip of the plug connected to your +12v
