1973Barracuda
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- Dec 11, 2009
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anyone here using the Holley HP system with a Gen III? Having some wiring issues.
I a, not certain how to hange the wiring on the iac and tps, going from four to three wires on the wiring harness, and tps from three to two wires.
Holley was not a great help.
Like I said, I have not been keeping up with changes. Here is what I found, early and late. Scroll down on both pages, there are various pdf documents
Early
Holley EFI 558-115 Gen III Hemi Main Harness, Early, w/ TPS and Idle Air Control Connections
Late
Holley EFI 558-116 Gen III HEMI Main Harness , Late, w/TPS and Idle Air Control Connections
Would a 4 wire TPS from a GM work if the voltage range was correct? Not sure about the IAC, but see what holley uses that harness for, and adapt one. Just my opinion lol
Are you talking about using the factory throttle body? The holley hp cannot do drive by wire.Yeah, I am awaiting approval to join. Sheesh.
I hope I can get a straight answer. Already heard potential bad news on another site from a guy who was stating he couldn’t find a solution with the throttle body for mopar. Here we go.......
Hopefully the smart guys there can help me out.
Im running HP but I used the FAST LS style throttle body with GM sensors and the correct harness, didnt have any issues. Hope you get it straight cause its really a very awesome system.
Steve, when you say correct harness, what part number are you referring to? Only two main harnesses that I am aware of.
HP Harnesses - Holley Performance Products
I am using an early one.
Thanks for the information on the LS TB, that is the way I have been leaning.