IWNTA20B

Hey all,
Just wondering...
If the S4 series TPS is wired to the series 6 FD TPS, will the LT8s that is configured for an '88 Turbo work? I'm planning on wiring the TPS to the FD TPS using FD UIM.
Below is a post I copied:


The S4 TPS has three wires at the plug; Vref, ground and narrow-range signal. The S5 TPS has four wires in the harness; Vref, ground, narrow-range signal and full-range signal, with the Vref and ground wires splitting in two (one each per sensor) for a total of three wires at each sensor and six at the plug. The FD TPS has the same four wires at the plug; they don't split as the two sensors are combined.

You need to cut the TPS plug off the FC harness and connect up the FD TPS. The best way to do this is to cut the TPS plug off an FD harness and match the wires colours up. The wire colours are:

Vref -- brown/white (all models)
Ground -- black (S4) or brown/black (S5 & FD)
Narrow-range signal -- green/red (all models)
Full-range signal -- black/green (S5 & FD only)

If you can't get hold of an FD TPS plug, terminate the wires with narrow insulated male spade crimp connectors and plug them into the FD TPS.

The TPS pin layout from left to right (clip on top) is:

| Ground | Narrow-range signal | Vref | Full-range signal |

Or by colour...

S4: | B | G/R | Br/W | -- |

S5: | Br/B (x2) | G/R | Br/W (x2) | B/G |