trying to install boost gauge
#1
trying to install boost gauge
so i was trying to install my boost gauge but I cant figure out where to connect the power supply. I know the black wire goes to the ground. but where do I connect the orange, red, and white wires?
#4
is this a mechanical or electronic boost gauge? if it's electronic (with it's own MAP sensor) like the Autometer i put in my Spirit R/T, then you will need to run the power wire to a place that has power with the key on AND while the engine is cranking.
#7
sounds like you have an electronic boost gauge. my Autometer electronic boost gauge has a vacuum/boost hose that goes from a McMaster-Carr manifold distribution block (mounted on the intake manifold). this hose goes to the 3-bar MAP sensor that came with my Autometer electronic boost gauge. from there, there is just a wire harness that goes straight to the back of the gauge. there is a ground, dimming, and power light. the power light must be connected to a place that has power with the key on and while the engine is being started so the gauge can calibrate itself every time the car is started to ambient pressure (so it can "zero" itself and therefore be accurate). i have tried mechanical boost gauges and found them to be extremely inaccurate. this may be due to my high elevation however. the needle would always sit at 1-3psi with the engine not even running. the electronic Autometer is always dead on.
#8
sounds like you have an electronic boost gauge. my Autometer electronic boost gauge has a vacuum/boost hose that goes from a McMaster-Carr manifold distribution block (mounted on the intake manifold). this hose goes to the 3-bar MAP sensor that came with my Autometer electronic boost gauge. from there, there is just a wire harness that goes straight to the back of the gauge. there is a ground, dimming, and power light. the power light must be connected to a place that has power with the key on and while the engine is being started so the gauge can calibrate itself every time the car is started to ambient pressure (so it can "zero" itself and therefore be accurate). i have tried mechanical boost gauges and found them to be extremely inaccurate. this may be due to my high elevation however. the needle would always sit at 1-3psi with the engine not even running. the electronic Autometer is always dead on.
#9
on an Audi, i do not know. use a voltmeter and hunt around for one on different circuits. have someone crank the engine while you check to see that power isn't dropped while cranking (and that power goes off when the key is off of course). that's probably your best bet.