grondilu
17.05.2021 0:04:52
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See full version: How to Install a Junction Box
This article has been viewed 70,406 times. more
Junction boxes protect electrical wires from damage, prevent shocks, and stop sparks from igniting flammable material nearby. To install one, you’ll need to strip the ends off all the wires that will be in the box. To complete the electrical circuit, tie together the same-colored wires and hold them in place with wire nuts. Be sure to take the proper precautions so your home can be safely supplied with electricity for many years. here
This article was co-authored by Ralph Childers. Ralph Childers is a master electrician based in the Portland, Oregon area with over 30 years of conducting and teaching electrical work. Ralph received his B.S. in Electrical Engineering from the University of Louisiana at Lafayette and holds an Oregon Journeyman Electrical License as well as electrician licenses in Louisiana and Texas.
A junction box protects electrical wires from damage, and you can install one if you have some electrical experience. Always wear rubber gloves and eye goggles as you work to prevent accidents. You’ll first need to turn off the main power and test the voltage of the circuit to make sure there’s no electricity running through it. Once it’s safe, you’ll need to screw the junction box onto the wall, pull the cables into the box, and strip the ends of the wires with wire strippers. Then, you’ll need to connect wires of the same color with a wire nut. Once they’re connected, you’ll need to install a stripped ground wire into a metal junction and seal the rest of the wires into their box. To learn how to properly strip wires, read more from our Electrician co-author! [links]
I took the leap, taught myself a lot and would like to share with you guys how to do it. I can help you with part numbers, harnesses, connectors etc. Here is the rough overview of my install in my 2008 PolarKraft Kodiak 178 FS with a 150hp optimax.
I was like many of you (I can tell by all of the questions floating around on these forums), wanting to install a smartcraft system in my boat, but found there is little accurate info out there.
one thing to know is that there needs to be two resistors in the system (at each end of the "CAN BUS TRUNK"). if you have two junction boxes, you will need to have a resistor in each of them, if you have one junction box (up front for tach and speedo kit) you can buy a cable that has one resistor built in at the engine side (p/n 879981TX, X= the length ie. 879981T20 would be a 20ft cable) and then one termination resistor in the box up front. If you are only doing a system monitor, you can have no junction boxes and buy a cable that has a resistor built in to each end (p/n 879982TX, X= length). You will also need to plug all open connectors (on junction boxes) with weather caps, the amount that come in the kits should suffice. [links]
79-879899K07 Grey face, black bezel tach and speedo kit, comes with tach and speedo harness, air temp sensor, one junction box, and I think one or two weather caps
879968T6 6' harness, I used it to go from the engine to rear junction box
879968T15 15' harness to go from rear junction box to front junction box
859318T1 Termination resistors
878492K16 6 way junction box with 3 weather caps
859743T03 Oil, fuel and paddle wheel harness
859223B1 Paddle wheel sensor
here is a pick of the rear junction box area (note the yellow "cap" you see is a terminator resistor, just under that is a purple weather cap)
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so many fake sites. this is the first one which worked! Many thanks [links]
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