Billy13

OK been searching the internet all night and did a search on here and I need help with what line to tape into for the boost gauge. I have the wiring no problem, background is in wiring aircraft. I have read that it is the fuel pressure line but not sure which one that is. Can anyone past a couple of pictures of the line I need to use.

2005 4.6 with M90.

Billy13

Here is what I am looking at. Can I hook the gauge up to the capped off tube on the back of the M90? In the first picture the third nipple back on top.

kenthicken

I tapped mine into the fuel pressure - manifold vacuum line. On your first pic, this is the vacuum line running across the top of the fuel rail that turns into the 90* brass fitting on the intake manifold. I believe this is how Roush plumbed the boost gauges at the factory as well.

Billy13

Thanks that is what I ended up doing. Got everything going but oil pressure gauge. Going to do that in a couple weeks

kenthicken

Well, I'm about to do that one, so let us know how it goes (specifically, where to tap in for switched power). Thinking about going with the Glow Shift oil filter sandwich for the sensor.

Billy13

Switchable power for gauges I got from radio and lighting I got from the TC & air bag light wire.

svfetter

That is exactly what I did to install the Roush Track Pak Gauges. Glow Shift provides nice stuff. For the Track Pak it was Oil Temp but same installation. Also used a Glow Shift part to install the Water Temp gauge sensor in the upper radiator hose. Good Luck.

http://i227.photobucket.com/albums/d...cture005-2.jpg