Blower Harness for TKFAN BA7050H12B

BOM

Id	Description	Qty	Unit	Designators	P/N	Manufacturer	MPN
1	Cable, Blower Built-in Pigtails, 4 x 20 AWG	350	mm	W1	included-with-blower
2	Connector, Mega-Fit 2x1, female, 2 pins	1		X2	ec-mega2x1	Molex	1716920102
3	Connector, Micro-Fit 1x4, female, 4 pins	1		X3	ec-micro1x4	Molex	0436450408
4	Connector, TKFAN 12V Blower with Pigtails, 4 pins	1		X1	ee-blower-tkfan	TKFAN	BA7050H12B
5	crimp, Molex Micro-Fit 3.0 Female Crimp Contact 20-24awg	1		X3	ec-microfit-f-crimp-20-24awg	Molex	43030-0002
6	crimp, Molex Pre-crimped Mega-Fit	2		X2	ew-pre2	Molex	0797582038

You will need all the tools listed.

• Using items from above BOM as well as:

  • 3mm heat shrink tubing [ew-shrink3]

  • 5mm heat shrink tubing [ew-shrink5]

  • Heat gun

  • Molex Micro-Fit 3.0 Crimper [te-microfit-crimper]

  • Wire Strippers

  • Soldering iron

  • Solder

• Instructions:

  1. Cut 3 pieces of the 5mm heat shrink, 15mm long each.

  2. Thread the 5mm heat shrink onto the the entire bundle of 4 wires on the blower. Do not shrink the heat shrink yet.

  3. Insert the 2x pre-crimped Mega-Fit wires into the Megafit 2x2 housing.

  4. Do a gentle pull test to confirm proper seating of the contacts.

  5. Cut the cable at a length of 50mm from the connector.

  6. Strip 5mm of insulation from the end of the pre-crimped wires and from the ends of the red and black pigtails of the blower.

  7. Cut 2 pieces of 3mm heat shrink, 15mm long.

  8. Take the 2 pieces of heat shrink and slide one each onto the red and black wires of the blower.

  9. Solder the red and black wires to the Mega-Fit connector cables according to the diagram (pin 1 on the Mega-Fit connector is indicated by a stripe on the connector body).

  10. Slide the heat shrink over the soldered portion and use the heat gun to shrink them in place.

  11. Strip the insulation from the blue pigtail of the blower, using the Micro-Fit crimp contact as a guide for the legth of insulation to strip.

  12. Using the micro-fit crimper, crimp the contact onto the end of the blue wire.

  13. Insert the contact and wire into the micro-fit connector housing according to the diagram.

  14. Do a gentle pull test to confirm proper seating of the contacts.

  15. On the yellow blower wire, cut off any uninsulated portion from the end of the wire and place a 5mm long piece of 3mm heat shrink tubing on the end and heat shrink it in place.

  16. Distribute the 5mm heat shrink tubing evenly along the harness bundle and shrink them with the heat gun.

Total price: USD 4.00