wiring help
1) The green plug looks to be the test connector that sits near the MAP sensor. I don't recognize the blue one, but I'm also used to S4 plugs, which are different.
2) The larger plug looks like it may be for the TPS.
3) I don't recognize any of those.
4) The Y/R wire is for the oil pressure sender, which is right under the oil filter in the picture. One of the other two is for the oil level sender, which is on the oil pan. Check which one will plug in, and confirm wire color in the FSM wiring diagrams. http://foxed.ca/index.php?page=rx7manual#secondgen
2) The larger plug looks like it may be for the TPS.
3) I don't recognize any of those.
4) The Y/R wire is for the oil pressure sender, which is right under the oil filter in the picture. One of the other two is for the oil level sender, which is on the oil pan. Check which one will plug in, and confirm wire color in the FSM wiring diagrams. http://foxed.ca/index.php?page=rx7manual#secondgen
I hope you converted everything to S5 wiring then, because S4/S5 wiring can't be mixed and matched. It looks like from the pictures that you at least have the S5 emissions and engine harnesses, but the Front harness also needs to be the same (it runs all the way from behind the dash to the front of the car by the radiator).
Also, that discolored white, 2 wire plug in pic 3 is for the IAT (intake air temp) sensor. It's copper colored and threaded into the compression tube bolted to the TB.
Also, that discolored white, 2 wire plug in pic 3 is for the IAT (intake air temp) sensor. It's copper colored and threaded into the compression tube bolted to the TB.
Depending on what harnesses you have swapped, it'll be a hell of lot more than just one plug different. The FEM connectors (front - emissions harness junctions) near the ECU will be the most complicated if you're still using an S4 front harness.
It is highly suggested that turbo swaps stay within series, or convert the engine to be used with S4 electronics/wiring.
It is highly suggested that turbo swaps stay within series, or convert the engine to be used with S4 electronics/wiring.
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toplessFC3Sman
2nd Generation Specific (1986-1992)
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