Fuel Pressure & General Gauge Qestion

[seagrave2001]

I'm hooking up a mechanical FP gauge with no isolator just a needle valve and was wondering is you have to bleed the air out of the system? Or leave it in there to act as a damper...



Also how would you hook your gauges to dim with the stock gauges? Is it easy to do?

 

[lil red cummins]

no - bleeding is not necessary. it will pressurize just fine. i did the same thing on my 3rd gen.



i crack the needle valve just enough to let the gauge work. that way even if the line breaks, it won't leak much fuel before i see or smell it.



i tapped the gauge light off of the heater control lights. i have my gauges mounted in the dash cubby, so this may not help you. any dash light or gauge light should be a good point for a tap. just use a test light to figure out which wire going to the dash light is correct.



good luck



jim

 

[SHobbs]

headlight switch

I tied all my gauges to the brown wire on the back of the headlight switch. They come on and dim with the stock dash lights.

 

[RHARVEY]

You can also pick up one of those "add a fuse" deals at most autoparts stores. All you have to do is remove the fuse for the illumination(sp) and plug in this deal which has not only a place for an extra fuse for your gauges but also a pig tail to connect your gauge wire to. This way it does the same thing as connecting to the brown wire but is much faster.

They are $$$ but that is the only way I do customers guages now. .



Rick

 

[seagrave2001]

You can also pick up one of those "add a fuse" deals at most autoparts stores. All you have to do is remove the fuse for the illumination(sp) and plug in this deal which has not only a place for an extra fuse for your gauges but also a pig tail to connect your gauge wire to. This way it does the same thing as connecting to the brown wire but is much faster.

They are $$$ but that is the only way I do customers guages now. .



Rick

If you tie it in this way will it still dim with the factory circut... Or will it just come on when you turn the lights on...