Digital fuel level gauge wiring

[cerial]

I am switching my dash over to full digital gauges and marine switches.

 

15 switches and 10 Gauges. All blue 2 to 4 number gauges.

Getting close to hitting the buy button on everything.

 

I am thinking of using this universal/programmable one for both the Fuel level and Oil temperature(I loose one gauge and it is close in color to the rest).

http://www.egaugesplus.com/water-temperature--fuel-level.html#

 

I have the 88 fuel sending unit and tank.

I plan on leaving the original pump/sending unit in the tank and using a mechanical fuel pump to suck the fuel through the (dead) electric pump body into the mechanical one and  to my carb.

 

As far as resistance should I run new wiring all the way back to the pump?

Or can I get away with simply use a female blade on the new gauge wiring and male blade on the old fuel wiring having it read correctly without a issue with the blades and resistance?

 

If I am not powering on the pump will the fuel level still read correct?

 

Thank you for your time and any help/advise you can provide.

[Jeep Driver]

Those are nice gauges. 

 

I would connect it the existing wire at the dash first and see how correct the gauge reads.........then go from there. 

 

I'm afraid your mech pump will not draw fuel through the existing pump. I think you'll have to remove the pump and install hose in its place. 

 

 

If you do remove the pump from inside the tank, I would cut and end the pos wire to the pump on the outside of the tank. I would not want a hot wire just dangling in the tank with nowhere to go.