The background narrative. I purchased a 1994 E320 wagon that had been stored in a garage for about the last ten years. The automobile is operational and, other from requiring several rubber and standard wear components to be replaced, is in generally satisfactory shape. Throughout the last month, I have dedicated every weekend and countless late nights to making the vehicle operational. It is quite probable that several further postings may follow; nonetheless, I am endeavoring to keep each topic distinct for everyone's convenience.
Upon purchasing this, the lamp-out warning light was the only indicator lighted while the engine was operational. All additional warning indicators would activate when the key is turned to position two. All gauges function well. There is an absence of backlighting throughout the car throughout. The right rear parking light is inoperative, and one inside bulb at the left rear door pillar is also inoperative. The factory radio is inoperative, with the exception of the flashing red security light.
I changed the headlight switch, resolving the issue with the absence of low beams. I inspected all the fuses in the engine compartment, cleaned and replaced any questionable components, and then verified for power on both terminals. I removed the wiper/signal relay and conducted a thorough cleaning and inspection of all components. This action made the blinkers functional. I removed and sanitized the headlight relay. I replaced the malfunctioning danger switch. The danger lights are operational, and the switch glows when activated. I removed the instrument cluster and conducted a visual inspection and testing of each bulb and socket using an ohmmeter. All have been tested successfully and are the appropriate OEM bulbs. I conducted a visual inspection and testing of the "red fuse," and it is functioning properly. I adjusted the dimmer and discovered that the solder connection was severed, so I resoldered and cleaned it, then verified its functionality with an ohmmeter. It was verified as functioning OK, so I proceeded with the reinstallation. I subsequently restored the cluster, although the backlights remain nonfunctional. I reexamined the cluster and used a test light to inspect each wire connected to it. The only wire carrying electricity is the 12v spade connection linked to the back of the tachometer/clock. I see no indications of degradation in any of the wires encountered inside the interior, and the wiring harness beneath the engine hood is a Denso replacement.
I am attempting to ascertain if any additional wire, other from the tachometer/clock wire, is required to provide electricity for the backlights in the cluster.
Upon purchasing this, the lamp-out warning light was the only indicator lighted while the engine was operational. All additional warning indicators would activate when the key is turned to position two. All gauges function well. There is an absence of backlighting throughout the car throughout. The right rear parking light is inoperative, and one inside bulb at the left rear door pillar is also inoperative. The factory radio is inoperative, with the exception of the flashing red security light.
I changed the headlight switch, resolving the issue with the absence of low beams. I inspected all the fuses in the engine compartment, cleaned and replaced any questionable components, and then verified for power on both terminals. I removed the wiper/signal relay and conducted a thorough cleaning and inspection of all components. This action made the blinkers functional. I removed and sanitized the headlight relay. I replaced the malfunctioning danger switch. The danger lights are operational, and the switch glows when activated. I removed the instrument cluster and conducted a visual inspection and testing of each bulb and socket using an ohmmeter. All have been tested successfully and are the appropriate OEM bulbs. I conducted a visual inspection and testing of the "red fuse," and it is functioning properly. I adjusted the dimmer and discovered that the solder connection was severed, so I resoldered and cleaned it, then verified its functionality with an ohmmeter. It was verified as functioning OK, so I proceeded with the reinstallation. I subsequently restored the cluster, although the backlights remain nonfunctional. I reexamined the cluster and used a test light to inspect each wire connected to it. The only wire carrying electricity is the 12v spade connection linked to the back of the tachometer/clock. I see no indications of degradation in any of the wires encountered inside the interior, and the wiring harness beneath the engine hood is a Denso replacement.
I am attempting to ascertain if any additional wire, other from the tachometer/clock wire, is required to provide electricity for the backlights in the cluster.