Differences

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--- tecnica:motori:honda_ntv650_wiring_diagram [2025/09/12 17:04] – [Connectors] niccolo
+++ tecnica:motori:honda_ntv650_wiring_diagram [2025/10/24 17:52] (current) – [Honda NTV650 Revere - Wiring diagram] niccolo
@@ Line 3: / Line 3: @@
 Here it is the **wiring diagram drawn in color**. It was derived by me from a black and white printed diagram from Honda. Inspecting the original drawing I spotted two erros: there were two missing joints. Both were in the main harness, one on the green wires and the other in the white/green wires.
-{{.:honda_ntv650:honda-ntv650-revere-wiring-diagram.png?direct&600|Honda NTV650 Revere wiring diagram}}
+{{.:honda_ntv650:honda-ntv650-revere-wiring-diagram-0.4.0.png?direct&600|Honda NTV650 Revere wiring diagram}}
-Here it is the the PDF version: **{{.:honda_ntv650:honda-ntv650-revere-wiring-diagram.pdf|Honda NTV650 Revere wiring diagram (PDF)}}**.
+Here it is the the PDF version: **{{.:honda_ntv650:honda-ntv650-revere-wiring-diagram-0.4.0.pdf|Honda NTV650 Revere wiring diagram (PDF)}}**.
 ===== Headlight wiring =====
@@ Line 16: / Line 16: @@
 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  ^
+^  ^ Outer diameter  ^ Number of strands  ^ Strand diameter  ^ Cross-sectional area  ^ AWG equivalent  ^ Ampacity  ^ Load  ^
-| Thin    |  1.70 mm |  20 |  0.16 mm |  0.40 mm² | 21 AWG 20/34  |
+^ Thin    |  1.70 mm |  20 |  0.16 mm |  0.40 mm² | 21 AWG 20/34  |   2.9 A |   35 W |
-| Medium  |  1.85 mm |  30 |  0.16 mm |  0.60 mm² | 19 AWG 30/34  |
+^ Medium  |  1.85 mm |  30 |  0.16 mm |  0.60 mm² | 19 AWG 30/34  |   4.3 A |   52 W |
-| Thick   |  2.65 mm |     |          |           |               |
+^ Thick   |  2.65 mm |  37 |  0.25 mm |  1.82 mm² | 15 AWG 37/30  |  13.0 A |  156 W |
 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]].
+**NOTICE**: The **19 AWG 30/34** notation means that there are 30 strands, each strand is an AWG #34 wire (0.160 mm diameter), the overall cross-sectional area is 0.60 mm², wich is almost an AWG #19 wire.
+**NOTICE**: The **ampacity** reported in the table is the maximum electrical current in amperes that the conductor can carry for **2 meters**, mantaining the **voltage drop below 2%**. The formulas for calculating the voltage drop for a copper conductor (coefficient ρ = 1.68*10^-8 Ωm) are:
+  * cable resistance **Ω** = (1,68 * 10^-8 **Ωm**) * (cable lenght **m**) / (cross sectional **m²**)
+  * voltage drop **v** = (current **A**) * (cable resistance **Ω**)
+==== Web References ====
+  * **[[https://www.12voltplanet.co.uk/cable-sizing-selection.html?srsltid=AfmBOoptInzPqpV0xFYnLUYFca2adSF8JNfqOuBPz5iGTt-0YLcToALN|Cable Sizing & Selection]]**
+  * **[[https://www.wirebarn.com/Wire-Size-Calculator-_ep_41.html|Wire Size Calculator]]**
 ===== Insulating tape =====
@@ Line 52: / Line 64: @@
 ^ 8240-4050  | Female terminal 2.8 mm, nickel-plated copper  |
-Here you can download the **{{.:honda_ntv650:sumitomo-mtw-connectors.pdf|Sumitomo MTW series conntector catalog}}**.
+Here you can download the **{{.:honda_ntv650:sumitomo-mtw-connectors.pdf|Sumitomo MTW series conntector catalog}}**. Beware of the **thickness** of the male terminal: it original is **0.5 mm**, whereas you can find many low quality replicas that are only 0.3 mm.
 ===== Fuel pump connector polarity =====
@@ Line 62: / Line 76: @@
 {{.: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.
+You will hear the noise from the working pump. Once the carburetors are full, the pump will stop.
+===== Connectors wires color =====
+{{.:honda_ntv650:ntv650-revere-connector-9p-mini-red.png?direct&360|NTV 650 Revere 9P Mini Red Connector}}
+{{.:honda_ntv650:ntv650-revere-connector-9p-mini-white.png?direct&360|NTV 650 Revere 9P Mini White Connector}}
+{{.:honda_ntv650:ntv650-revere-fuse-box.png?direct&360|NTV 650 Revere Fuses Box}}