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PostPosted: Tue Jan 09, 2018 10:42 am 
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Joined: Fri Oct 14, 2016 5:08 am
Posts: 64
Location: Dubuque, Iowa
I am looking to greatly simplify my OEM chassis and engine wiring harness (weight, maintenance etc.)

However, the nest of wires does have one good feature IMO, and that is the circuit that looks for a signal from the CPS before allowing the flow of voltage to the fuel pump.

How are you guys handling this on your race cars?

I see a few solutions:

-Longacre low oil pressure switch: cuts the circuit when it see lack of oil pressure
-Inertia Switches: looks for a certain level of impact
-Let the Master Kill switch disconnect the circuit: Least desirable in an accident situation IMO

There are users of the oil pressure and inertia switches that have reported problems for various reasons (curbs, vibration, motor that sees lower oil pressure during cornering/braking)

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PostPosted: Tue Jan 09, 2018 12:05 pm 
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Joined: Thu Jan 22, 2004 3:31 pm
Posts: 663
Is this injected or carbs. If injected the ECU should already control the fuel pump via a relay.


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