OK, I have had 2 dual gauges and 4 independent switches in my car for the last few years, PAIN in the ass to always try to get the front and rear at a level height.
So i want to change it to 2 single needle gauges and 2 toggle switches. Do I have to completely re wire my switches. I am going to use a T connector for my air lines to tie them into 1 gauge, hope that will work to.
any help?

? PLEASE