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| Trucks [ Eighteen Wheelers ] Roll On Big Mama. Forum/Discussion about Eighteen Wheeler Trucks. What truck do you like or dislike? Is your favorite truck a Mack, Peterbilt, Kenworth, Marmon, Volvo or Freightliner? Which diesel engine do you prefer; Detroit Diesel, Cummins, or... |
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07.03.2009
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 high beams not working i have a new to me '93 freightliner fld 120 that i am going thru and undoing all of the mickey mouse stuff that has been done to it. in this process my once working high beams not longer function. basically, when i flip the headlight switch down to turn on just the running lights, i hear a relay clicking and nothing works. i can flip the headlight switch up and all lights work, except the high beams. ideas on where to start looking (besides the obvious electrical system - need to narrow that down a bit)? wires were "jumped" into the headlight wiring system to get fog lights to work. i did not like the way it was wired and only removed the wiring to the fog lights. obviously i inadvertently did something else to caused the high beams to stop functioning. thanks for any possible help.  |
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07.03.2009
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| Do you have the ignition switch turned on? On a Freightliner FLD120 you have to have the key (ignition) switch on for the high beams to work. |
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07.03.2009
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| Per the Freightliner FLD120 manual: Headlight Switch and Daytime Running Lights A three-position headlight switch (Fig. 2.8) is used to operate the exterior lights. When the switch is up the headlights, and all other vehicle lights, are on. All vehicle lighting is off when the switch is in the middle position. When down, the switch activates only the clearance, instrument panel, and marker lights, and the taillights. The switch for the headlight high beams is built into the turn signal lever. When the headlights are on high beam, a green light in the warning and indicator light module goes on. The ignition switch must be on for the high beams to operate. For vehicles built to operate in Canada, switching on the ignition and releasing the parking brakes automatically activates the headlight low beams (later model vehicles) or high beams (earlier model vehicles) at half voltage as daytime running lights. The daytime running lights will operate until the parking brakes are applied; then they will switch off. Turning on the regular headlights will override the daytime running lights. The vehicle cannot be driven unless either the headlights or daytime running lights are activated. |
| The Following User Says Thank You to BigSam For This Useful Post: | ||
joecitizen (07.05.2009) | ||
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07.04.2009
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| Does the Highbeam indcator come on? |
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07.05.2009
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| Thanks everyone all for the replies... Never thought I would need the key one for the high beams to work. When I get back home from the holiday weekend, I will give it a try and report back. BigSam... Quote:
2fuzy... Quote:
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07.05.2009
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| The manual can be downloaded for free on freightliners web site. I PM'ed you a link to the manual. |
| The Following User Says Thank You to BigSam For This Useful Post: | ||
joecitizen (07.06.2009) | ||
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07.07.2009
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| left upper part of your fuse panal is the relays for headlights.. the headlight relays also operate your marker lights replace, both the left headlight relay and the right headight relay... also make sure they are not corroded. a windshield that is leaking will soak the fuse panal. then its not a bad ideal to remove and replace all corroded relays
__________________ FYDA FREIGHTLINER CINCINNATI FREIGHLTINER, WESTERN STAR, SPRINTER DEALER FREE DOT'S AND A/C INSPECTIONS http://www.fydafreightliner.com/cincinnati.asp we can drop ship parts to u special prices on trucks for members. just ask for all your truck needs |
| The Following User Says Thank You to FYDA FREIGHTLINER CINCY For This Useful Post: | ||
joecitizen (07.09.2009) | ||
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07.09.2009
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| finally got to the truck today and sure enough, turn the key on and voila...high beams, even the indicator light on the dash is working! still got a clicking sound coming from the relay for the trailer... thanks again to all who offered input... |
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