2003 W900 Cab swap

Discussion in 'Kenworth Forum' started by Maas Trucking, Dec 16, 2016.

  1. Maas Trucking

    Maas Trucking Bobtail Member

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    Hello everyone,

    I am new to the forum and have been driving for a few years now. I purchased an 03 W900L day cab with a C-15 6NZ last winter and I have come to the point where I would like to do something different with the cab now.

    I am roughly 6'7 and the day cab just doesn't have enough room for comfort. I really like the extended cab trucks that I have test drove and sat in, but I don't want to give up my 6NZ and set up. I am curious if anyone knows of people taking a cab off of a 07 and newer truck set up for a C-15 accert and putting it on an older one set up for a C-15 6NZ? Would this be the same 70 pin connector? I would really like to get the newer interior and seeing how mine has had numerous owners who thought they were electricians, I wouldn't mind having new wiring too. ;) If the 70 pin connector is the same for all CAT C-15's then this could be a much easier project.

    I have also looked at the Mega Cab XL conversion kit from the Daycab Company, but that still leaves me with the same cab that I have now, just extended 4-6 inches. This is my last option.

    Also, would a cab from a T800 work just the same as the W900? From everything I have seen they are the same, just different noses, but I could definitely be wrong on this.

    Any info that can help me on my research for this project would be greatly appreciated.

    Thank you,

    Adam
     
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  3. maggard359

    maggard359 Medium Load Member

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    Yes the cab side will be the same. 2008 up you will need to swap pins 11 and 21 to work with 6nz fan.
     
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  4. special-k

    special-k Road Train Member

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    I would make sure kenworth never went to multiplex wiring. That could turn it into a nightmare and big $$$. I would think you could do the the mega cab kit and redo your wiring and interior for less money than changing cabs. But then I'm not 6'7" crammed into a k-w lol. I'm assuming you want one of those ext cab/sleeper with the 24" space with the windows and the raised roof. Hard on the eyes imo
     
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  5. Maas Trucking

    Maas Trucking Bobtail Member

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    Dec 16, 2016
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    Not trying to be a dummy here, but what is multiplex wiring? Honestly never heard of it.

    The extended cabs that I'm looking at still only have the one window in the back panel. I know the ones your talking about with the corner windows, I'm not a fan of those either. Would love it if I could do a 48" sleeper, but I'm not sure there is enough room on my 220" WB.
     
  6. special-k

    special-k Road Train Member

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    Thays where they use single wires for multiple power sources. I've only read about it. International uses it as far as i know. Somehow they break up the electricity so they can power up different things. Its a way to save money and wiring afaik. A real mechanic could give you a better answer
     
  7. special-k

    special-k Road Train Member

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    220 wheelbase should have enough room for a small bunk. 36" would be better yet. The real issue would be that i dont think k-w put a big sleeper opening on their modular sleepers. I could ne wrong though its been years since I've seen the inside of a w-9 with a modular sleeper. My 88 t-6 had a small opening and the seat was always against the cab and I'm barely 6' tall. I has Pete seats in it because the back was nice and thin so the seat could go back further.i used to joke that i felt like a pregnant women cause id have my left leg stretched out to the fuse panel and my right leg ####ed over to that big fuel pedal and resting against the dash lol. Pete's have the big opening so the seat can be slid back into the opening enough to give lots of leg room.
     
  8. Maas Trucking

    Maas Trucking Bobtail Member

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    The extended cabs they do these days are the aerocabs without the sleeper on them. I would also do an aerocab sleeper as well because it opens up the whole backside of the cab, not just the small opening between the seats.
     
  9. AModelCat

    AModelCat Road Train Member

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    Multiplex systems are basically a system where everything electronic (gauges, modules etc) communicate between each other over a common, 2 wire network. Without getting too much in depth, information is thrown out on the network at a very high speed and whatever device requires that information will pick it up (ie engine RPM will be displayed on the tach but the information from that same sensor will also be utilized by the ECU and possibly by some type of aftermarket PTO systems as well). The main reason for going multiplexed is reduced wiring and making it easier to add additional equipment.
     
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  10. Maas Trucking

    Maas Trucking Bobtail Member

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    Thank you for that information. I was not aware that they were doing this in newer models, I will look into that. If anyone has any info on if or when KW started using multiplex systems it would be greatly appreciated.

    Adam
     
  11. 04 LowMax

    04 LowMax Medium Load Member

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    My 04 Star has the multi-plex. From on o/o point of view it's a sucky system because you can't do much with it if you have problems. My pyro quit and I ended up just putting in a complete separate after market one. (I bought a new factory gauge first, and it didn't work. Wasted money, because being electrical, no return).
     
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