Wiring harness help

[JGross]

I'm working on the wiring harness from my 5.3 vortec doner engine and I need a litte help. After removing the un-needed wires from the PCM contectors (according to LT1Swap) there are two wires left attached to the C100 conntector, one is the oil pressure sender and one is labled " Fused Ignition 3 Feed (Gas) - Front Axle Actuator Switch". Question 1 do I need the oil PSI sender connector, I,ll be using an aftermarket pressure gauge. Question 2 do i need the "Fused Ignition 3 Feed (Gas) - Front Axle Actuator Switch"?

Thanks
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[JGross]

Originally Posted by JGross

I'm working on the wiring harness from my 5.3 vortec doner engine and I need a litte help. After removing the un-needed wires from the PCM contectors (according to LT1Swap) there are two wires left attached to the C100 conntector, one is the oil pressure sender and one is labled " Fused Ignition 3 Feed (Gas) - Front Axle Actuator Switch". Question 1 do I need the oil PSI sender connector, I,ll be using an aftermarket pressure gauge. Question 2 do i need the "Fused Ignition 3 Feed (Gas) - Front Axle Actuator Switch"?

Thanks
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I think I've figuared out the C100 connector question but another question has come up. On the C2 block there are two ground wires one is labled "Engine Control Module Ground" the other is "Ground". Do I connect these to an external gorund or do I just remove them?

Thanks
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[ghettoluxury]

external ground