Electrical
Diesel Engine Glow Plug Timer Relay Failure - Options for Repair
Here is an option to replace the pre-glow factory unit with a reliable manual controlled relay
What's wrong with my Mercedes?
Electrical Problems
Electrical
Troubleshooting an Electrical Problem
Unknown battery drain, electrical shorts, blown fuses - these can be difficult to isolate!
Electrical
O.E. Aluminum Fuse Failure
One of the most common problems we see on older Mercedes.
Electrical
Weak U.S. Round or Square Headlights on 1985 and Older Models
Installing H4 headlight upgrades will make a difference between night and day
Electrical
Properly Maintaining an Old Car Battery
Neglect is probably the No. 1 Cause of your Benz not starting
Electrical
Rear Door Power Window Failure
Do proper testing BEFORE ordering parts or removing door panel
Electrical
Power Antenna Failure
There is a quick fix as well as a more permanent repair
Electrical
Rear Door Power Window Failure
Do proper testing BEFORE ordering parts or removing door panel
Electrical
Key Not Springing Back From the Start Position
This is a sure sign your electrical switch is going bad
Electrical
Removing the Buzzer Switch From an Ignition Lock Assembly
Not as easy as it looks and easy to break if you don't know the proper tricks
Electrical
Fixing or Replacing a Broken Hirschmann Power Antenna
Originals are hard to fix and not available new - Universal new antenna may be best option
Electrical
Inaccurate or Erratic Fuel Gauge
This could be caused by one or even a combination of three things.
Electrical
Service Requirements for Power Antennas
Yes, they do need service if you want them to last.
Electrical
OM 636 Diesel Engine Slow Starts
Tired of it taking sooooo long to heat up your glow plugs
Electrical
What Could Go Wrong When Changing an Ignition Switch or Steering Lock??
If the wiring plug falls apart on you, you won't know what coded wires go where!!!
Electrical
Removing a W123 Fuse Box Cover
Talk about a Chinese jig saw puzzle. Kent can show you the trick
Electrical
Ignition Switch Wire Plug Comes Apart Accidentally
You will need a wire schematic to figure out which wires go into which holes
Electrical
Removing a W123 Diesel Big Battery
Can it really be all that difficult?
Electrical
Best Way to Fix a Non-Working Odometer or Speedometer
Kent recommends just sending it out for professional repair
Electrical
Engine Won't Turn Over When It Sits Overnight
Do not assume it is just a bad battery! Diagnose first...
Electrical
Problems with Glow override Solenoid Relay Installation - How to Test
Kent will show you some quick checks to test operation
Electrical
Frequent Glow Plug Failure
If you are constantly having to replace glow plugs do not immediately blame the plugs! Ream the carbon!
Electrical
Replacing a Badly Burned Wiring Harness
Don't let anyone kid you... this is not an easy job!
Electrical
Testing Diesel Engine Glow Plugs for Proper Operation
Burned out glow plugs, bad pre glow relay, blown fuse, wiring - all need to be tested
Electrical
My New Power Antenna is Not Working
It just may not be wired properly. Most likely it is NOT the antenna.
Electrical
Battery Staying Charged During Prolonged Vehicle Storage
You have a couple options to keep the battery alive!
Electrical
Charging a Totally Dead Battery
Some chargers won't start the charge cycle without some help
Electrical
Premature Glow Plug Failure
If it is happening on a regular basis it probably is not bad glow plugs
Electrical
Fuse Repeatedly Burns Out?
Isolate the source of the short to finally solve your problem
Electrical
Removing a Tumbler from a Steering Lock if the Key Won't Turn
It is possible to do this but you have to cut the black cap off first.
Electrical
Knowing How to Use the Cruise Control Lever on Older Mercedes
We share with you the factory instructions for most models from the late 1970's to late 1980's
Electrical
Buffing and Sanding in Tight Places
This is one of Kent’s favorite tools to have around the shop
Electrical
How to Open up and Clean Old Electrical Plugs
Corrosion on the contacts can cause all kinds of electrical problems
Electrical
Lost 116 and 123 Fuse Box Location Chart
Knowing what fuse does what is a must when troubleshooting electrical problems
Electrical
Cleaning Up Ugly Battery Post Corrosion
You can do it with commercial products or something in the cupboard
Electrical
New Tumbler Installed and Key is Stuck - HELP!
We are getting too many emails like this usually after parts are bought somewhere else