This wiring guide is for swapping an S13 SR20det motor into the S13 240SX chassis. It's actually not as difficult as many may think. Following the SR20det wiring diagram below will get you up and running in no time.
Before you get started, make sure you have the following tools and supplies handy to make the sr20det swap wiring a smooth process:
- Wiring Electrical tape
- Wire Strippers and Cutter
- Soldering Iron and Wire Solder
- Heat Shrink Tubing
- Heatgun or Lighter
Heat shrink tubing and a heatgun is optional, but gives the modifications a professional touch and is less prone to potential future problems.
The first modification required is replacing the SR dash connector with the stock KA dash connector. The SR dash connector (white, as shown in Figure 1) will not mate with the KA dash harness, so it needs to be replaced with the KA dash connector. Cut both the SR & KA dash connectors, and wire the KA one to the SR harness using the table & wiring color guide below.
Connect the wires according to the table below:
|SR Wire Color||KA Wire Color||Function|
|Black (may be more than 1)||Black (may be more than 1)||Ground|
|Blue / Green Stripe||Blue / Green Stripe||AC Signal|
|Blue / Black Stripe||Blue / Black Stripe||Water Temperature Signal|
|Yellow / Red Stripe||Yellow / Red Stripe||Tachometer Signal|
|Yellow / Green Stripe||Yellow / Green Stripe||Speedometer Signal|
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