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#1
03-26-2007, 12:33 PM
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tail turn & brake lights
I just got a 300sd
one of the tail lights work and other one shows 3 volts no rear turn flashers but the fronts one work and no brake lights eathor where are the common voltage drop or short areas and whats the pin out on the 6 pin connections [they look good and bright] I would think bad grounds BUT the one light works fine fuses look and read good too I have a good digital VOM 
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#2
03-26-2007, 12:46 PM
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replace all the bulbs, over time the connectors get oxidized and u need to clean them with contact cleaner. If the tail light assembely is bad, pull one from a scrap yard.
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82' 300SD
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#3
03-26-2007, 12:48 PM
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Have you swapped out the bulbs? Make sure it has the proper bulbs, not 1157 type.
Brown is the ground colored wires. Check the fuses for clean contacts, and also check the headlight switch. Did some one try to do and LED conversion? There may be a resistor wired in some where, as LED's like 3-5 volts. Check all the wiring for continuity and resistance. Resistance = heat. Heat = possible wire meltdown.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#4
03-26-2007, 01:11 PM
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all had normal glass bulbs in it
they were old and poor looking [burned glass] so replacemint was first step but only one is lit [ the one tail reads 12volts] others are zero excpt the one that reads 3 volts [the right tail light] head lights parking and turns all work on the front end problem is between fuse out and rear pannel I used sylvania #7506 for the bigger ones and # 67 for the smaller ones wiggled fuses and checked volts there 12 volts so ok there drop is somewhere else,[ where? ]
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#5
03-26-2007, 01:17 PM
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Could be the PO got a little wire cutter happy, or some errant rodent decided to chew. You will need to trace the wires.
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#7
03-26-2007, 05:27 PM
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 wiggle jiggled and finally got the all to work for a little bitthen the right tail went out again and will not come back it still shows way toooo low volts 0.4 now  may have to jump it from the other [left side] :fork_off:
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