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--- tecnica:motori:honda_ntv650_wiring_diagram [2024/09/23 11:00] – niccolo
+++ tecnica:motori:honda_ntv650_wiring_diagram [2025/09/07 17:52] (current) – [Connectors] niccolo
@@ Line 11: / Line 11: @@
 {{.:honda_ntv650:honda-ntv650-wiring-headlight.png?320|NT650 Revere - Headlight}}
 {{.:honda_ntv650:honda-ntv650-wiring-headlight.jpg?320|NT650 Revere - Headlight}}
+===== Harness wires gauge =====
+Inside the main wiring harness you will find at least three types of cables; they are stranded cables of different gauges, these are the specifications:
+^  ^ Outer diameter  ^ Number of strands  ^ Strand diameter  ^ Cross-section area  ^ AWG equivalent  ^
+| Thin    |  1.70 mm |  20 |  0.16 mm |  0.40 mm² | 21 AWG 20/34  |
+| Medium  |  1.85 mm |  30 |  0.16 mm |  0.60 mm² | 19 AWG 30/34  |
+| Thick   |  2.65 mm |     |          |           |               |
+The outer diameter refers to the overall cable, including the insulator. The AWG gauge is calculated measuring the diameter of the single strand and calculating the overall cross-sectional area; then the nearest value is looked into the [[wp>American_wire_gauge|AWG gauge table]].
+===== Connectors =====
+The **mini connectors** used into the wiring harness are the **MTW Sumitomo** unsealed series, with **2.8 mm** terminals. Here are the part numbers:
+^  Sumitomo MTW series  ^^
+^ 6040-2111  | Housing Female, 2P  |
+^ 6030-2981  | Housing Male, 2P    |
+^ 6040-3111  | Housing Female, 3P  |
+^ 6030-3991  | Housing Male, 3P    |
+^ 6040-4111  | Housing Female, 4P  |
+^ 6030-4991  | Housing Male, 4P    |
+^ 6040-9111  | Housing Female, 9P  |
+^ 6030-9991  | Housing Male, 9P    |
+^ 1500-0071  | Male terminal 2.8 mm  |
+^ 8240-4050  | Female terminal 2.8 mm  |
+===== Fuel pump connector polarity =====
+After disassembling the carburetors you may want to force the fuel to fill them again. Using the start button and letting the entire engine rawwing for a long time may be an high load for the battery, so you may prefer to provide 12 V directly to the pump connector.
+In this photo you see the polarity (red is positive and black is negative) of the connector from the wiring harness to the pump:
+{{.:honda_ntv650:ntv650-fuel-pump-connector-polarity.jpg?nolink&320|NT650 Revere - Fuel pump connector}}
+You will hear the noise from the working pump. Ance the carburetors are full, the pump will stop.