Quote:
Originally Posted by snapped_bolt
Hi,
The original wire glow plugs were upgraded to pencil-type. For some reason there is a wire connected directly to the battery, and one small gauge
wire (18 or less?) breaks out of the wire bundle to a terminal on the solenoid.
The car, after the glowplug kit was installed, developed electrical issues, namely the battery would quickly discharge after running, as if the lights had been left on.
When the car came to my place, I decided to disconnect the wire after a run, and the car starts even over a week later like it was shot out a cannon.
What could be the cause? I am thinking something is not wired correctly through the glowplug relay, or it could be the radio circuit-which is aftermarket-and is also wired hot to the battery, and bypasses the stock fuse panel.
I don't want to get into tearing apart wire bundles, but I am sure it will have to be done to single out the culprit.
The PO replaced the starter, alternator, alternator bracket (new) ignition switch (new) without giving thought to this one wire, and what it was connected to. Maybe the glowplugs are staying ON?!?
I can't imagine a radio circuit drawing as much power as the headlights, but something is drawing a lot of juice!
Any ideas appreciated!!!
Thanks,
snapped_bolt
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Which Glow Plug Relay are you useing?
They show 2 for your year and model. which is in an aluminum box and is behind the instrument cluster or on the left Fender Well (For California models with chassis serial number from 149279 through 208266. For Federal (non-California) models with chassis serial number from 149292 through 208266. Please note appearance and Mercedes part number on existing unit prior to ordering. 1 per car.) It bolts down at three points and is like $550 for a new one.
Or do you think you are using the Relay that came with the Adapter Glow Plug Kit?
If you are using the Relay that comes in the kit it is likely that it has been wired wrong.
The Silver Box type Relays generally work without the Relay From the Kit. I think the fender well Relay will also work but few people have them and I have not read a thread on them.