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T680 Headlight Assembly

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Roteck, Aug 11, 2018.

Page 2 of 3
  1. Aug 11, 2018 #11
    Roteck

    Roteck Light Load Member

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    Dec 18, 2016
    Abilene, TX
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    Ah. Yeah I can't find any for a t680
     
    Roteck, Aug 11, 2018
    Roteck, Aug 11, 2018
    #11
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  3. Aug 11, 2018 #12
    Roteck

    Roteck Light Load Member

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    Dec 18, 2016
    Abilene, TX
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    my truck has H11s so will any H11 fit the socket ?
     
    Roteck, Aug 11, 2018
    Roteck, Aug 11, 2018
    #12
  4. Aug 11, 2018 #13
    fargonaz

    fargonaz Road Train Member

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    They did for my 660 and the cascadia I drive now.

    Make sure and get the 55W for your low beams, the 100W will definitely melt the connector.
     
    fargonaz, Aug 11, 2018
    fargonaz, Aug 11, 2018
    #13
  5. Aug 12, 2018 #14
    mitrucker

    mitrucker Road Train Member

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    No completely sure. I just know that the mechanics at work have done lots of wiring repairs on the 680s.
     
    mitrucker, Aug 12, 2018
    mitrucker, Aug 12, 2018
    #14
  7. Aug 12, 2018 #15
    boneebone

    boneebone Road Train Member

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    If you're looking for an aftermarket T680 headlight assembly you won't find one till at least 2024, as the OEM's have a patent that usually expires after 10 years so no aftermarket replacement parts can be copied or made till after the patent expires.

    The KW T680 was first introduced in 2014, so figure in about six more years (2024), you can expect aftermarket replacement parts to be readily available.

    The KW T660 was first introduced in 2007, that's why the aftermarket is saturated with tons of aftermarket replacement parts that started being produced last year.
     
    Last edited: Aug 12, 2018
    boneebone, Aug 12, 2018
    boneebone, Aug 12, 2018
    #15
    magoo68, Roteck and 25(2)+2 Thank this.
  8. Aug 12, 2018 #16
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    H11 halogen bulbs are available in 55 and 100 watt versions, we had a few guys replacing 55s with 100s and melting the wiring and connections in the early Cascadias. I prefer not overpowering everything else out there with overbright lights, I use stock color and might even go a little less in lots of fog, which I haven't experienced lately.

    Shop foreman told me to not ever replace with 100s and showed me the result. I don't know that it's for sure the problem because I did have a socket go bad even though I always use 55s, but if done and its overloading the system, it would cause that kind of failure.
     
    25(2)+2, Aug 12, 2018
    25(2)+2, Aug 12, 2018
    #16
    fargonaz Thanks this.
  9. Aug 12, 2018 #17
    Roteck

    Roteck Light Load Member

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    Dec 18, 2016
    Abilene, TX
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    That's exactly what i thought was going on when the very first one melted after i bought the truck. When I was a company driver i always used 55w on the t680 I had and never had an issue. when the first bulb melted in this truck the first thing i noticed was that the bulb was a 100w. passenger side was 55w. I replaced the driver side with a 55w and it still melted after 2 or so weeks and has continued to do that. I'm wondering if the assembly wiring gets somehow permanently damaged once by an overpowered bulb and melts everything from then on.
     
    Roteck, Aug 12, 2018
    Roteck, Aug 12, 2018
    #17
    25(2)+2 Thanks this.
  10. Aug 12, 2018 #18
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

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    Check it over looking for signs of overheating of the connections and wires, other than that, I can't say.

    I'd go back to where the bucket wires are attached to the lighting harness. I'm not confident you'll find anything too obvious, though. Jury rigged electrical connections drawing much power are tricky, a proper repair gets rid of temporary fixes by attaching a new socket back to wiring that hasn't been melted in place.
     
    25(2)+2, Aug 12, 2018
    25(2)+2, Aug 12, 2018
    #18
    Roteck Thanks this.
  11. Aug 15, 2018 #19
    Roteck

    Roteck Light Load Member

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    Dec 18, 2016
    Abilene, TX
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    I am going to buy a new bucket, and run OPT7 LEDs in it.
     
    Roteck, Aug 15, 2018
    Roteck, Aug 15, 2018
    #19
    fargonaz Thanks this.
  12. Aug 16, 2018 #20
    fargonaz

    fargonaz Road Train Member

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    Take some pics when you're done.
     
    fargonaz, Aug 16, 2018
    fargonaz, Aug 16, 2018
    #20
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