389 headlights

Discussion in 'Peterbilt Forum' started by CH Trucking, Jul 4, 2020.

  1. CH Trucking

    CH Trucking Bobtail Member

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    Jul 4, 2020
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    Has anyone put single rounds on a 389 and had problems with the plug melting?
     
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  3. pushbroom

    pushbroom Road Train Member

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    I have done single rounds or dual 359 style. As long as the wiring is the correct gauge there shouldn't be any melting. Are you using the factory 8 pin deutsh plug?
     
    spsauerland Thanks this.
  4. CH Trucking

    CH Trucking Bobtail Member

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    Jul 4, 2020
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    I used the factory plug. And bought h4 pigtails from peterbilt to replace the cheap wiring that came with the headlights. If I run my high beams to long it will melt the plug or blow the bulb. If been thinking of changing to the double rounds.
     
  5. pushbroom

    pushbroom Road Train Member

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    Sounds like the headlights draw too much current for the factory wire and pins.
     
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