OK the brake wiring got me to open up the junction box behind my king pin. I have been it it before to get the reverse light (yellow wire) but not noticed much else. This is the replacement unit I have https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
For those that have done the install, did you put it back in the same place? I went looking for an install thread but did not find one, but you know I am search impaired
I assume step one is to remove the screws holding the OEM metal box in place and lower it out of the king pin head. The secure the MICTUNING where it was and probably secure the 7way cable. Then as I remove each wire....hmmmm the trailer side wire bundle is secured with the box fitting,,,so how to remove and install one at a time. Tips?
Most looks straight forward. Remove on for the old and install in the new. Example the blue brake wire and emergency brake disconnect power feed (black) I would remove for the Scotch conecctor, install ring terminals and install to the blue wire stud in the MICTUNING
However what did you folks do with the big bundle of negative return wiring (white) under the big (loose again) blue wire nut. One white wire comes from the 7 way cable, the rest go into the trailer wiring harness. I do not see a ground screw in the metal junction box, but it may be hidden. Is the white wire the trailer ground (negative return) to the tow vehicle? Can I install a ground stud outside the MICTUNING? I don't think they will all fit inside the new junction box.
Last question - was there plenty of wire length when you moved the wires over? It looks like I have an inch or two of wire bundle to the left of the existing box.
Thanks for any help or useful links.
Keith
BTW folks if you have an intermittent grounding issue (blinking/flashing trailer lights). look in your junction box for this blue nut and be sure it is tight. On my unit there was a second one below the power bar where the battery connects. I moved those to thier own ground (negative return bar) connected to the trailer frame..
For those that have done the install, did you put it back in the same place? I went looking for an install thread but did not find one, but you know I am search impaired
I assume step one is to remove the screws holding the OEM metal box in place and lower it out of the king pin head. The secure the MICTUNING where it was and probably secure the 7way cable. Then as I remove each wire....hmmmm the trailer side wire bundle is secured with the box fitting,,,so how to remove and install one at a time. Tips?
Most looks straight forward. Remove on for the old and install in the new. Example the blue brake wire and emergency brake disconnect power feed (black) I would remove for the Scotch conecctor, install ring terminals and install to the blue wire stud in the MICTUNING
However what did you folks do with the big bundle of negative return wiring (white) under the big (loose again) blue wire nut. One white wire comes from the 7 way cable, the rest go into the trailer wiring harness. I do not see a ground screw in the metal junction box, but it may be hidden. Is the white wire the trailer ground (negative return) to the tow vehicle? Can I install a ground stud outside the MICTUNING? I don't think they will all fit inside the new junction box.
Last question - was there plenty of wire length when you moved the wires over? It looks like I have an inch or two of wire bundle to the left of the existing box.
Thanks for any help or useful links.
Keith
BTW folks if you have an intermittent grounding issue (blinking/flashing trailer lights). look in your junction box for this blue nut and be sure it is tight. On my unit there was a second one below the power bar where the battery connects. I moved those to thier own ground (negative return bar) connected to the trailer frame..
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