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tecnica:motori:honda_ntv650_wiring_diagram [2025/09/12 16:59] – [Connectors] niccolotecnica:motori:honda_ntv650_wiring_diagram [2025/10/21 10:33] (current) – [Harness wires gauge] niccolo
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 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: 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]]. 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 ===== ===== Insulating tape =====
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 ^ 1500-0071  | Male terminal 2.8 mm, tinned brass  | ^ 1500-0071  | Male terminal 2.8 mm, tinned brass  |
 ^ 1800-2097  | Male terminal 2.8 mm, nickel-plated copper  | ^ 1800-2097  | Male terminal 2.8 mm, nickel-plated copper  |
-^ 8240-4050  | Female terminal 2.8 mm  |+^ 8240-4092  | Female terminal 2.8 mm, tinned brass  | 
 +^ 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}}**. 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 ===== ===== Fuel pump connector polarity =====
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 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. Ance 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}}
 +
  
tecnica/motori/honda_ntv650_wiring_diagram.1757689197.txt.gz · Last modified: by niccolo