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Overload protection relay blowing fuses on my 1989 MBz 420 SEL

With key off, fuse blows immediatly when can I test this relay(MBz#201 3745

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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1224 Answers

SOURCE: E.E.C fuse keeps blowing in 1991 Ford Explorer

if you replaced fuel pump i would look at backward wiring when replaced and i would start at the source of work if your vehicle was working fine before replacement then 9 out of 10 it will be your fuel pump wireing

sometimes when putting wireing back together the connectors have the missing clip and in turn you can turn the wireing in both directions now where positive is touching the ground on both sides of connector kris kross problem check your work this is crucial use a test light to find the right wires where they go

Posted on May 26, 2008

  • 80651 Answers

SOURCE: Fuse Keeps Blowing

Replace the lighter assembly, it is shorted, this is very common.

Posted on Dec 11, 2008

  • 1 Answer

SOURCE: 92 cadillac deville a/c blows fuse

I can't locate the under dash fuse block on my 92 cad sts. Help please. The AC/Heat blower will not come on, I think I have a blown fuse.

Posted on Jun 12, 2009

  • 20 Answers

SOURCE: 98 grand cherokee asd relay blowing fuse

The fuse it doing it's job, you have a short ( Wire that is connected to a ground, that draws too much power )

If you have an electrical schematic ( Repair manual ) find out which wires are connected to that fuse and check them for any chaffing, cuts, unnesassary twists, or corrosion.

If you have a ohm-meter, isolate the system ( by disconnecting the fuse, and other connections. Then check for any resistance on wires that should not be connected ( because you disconnected them ) by having one Lead on the wire's connector and the other meter-lead on your car's frame. A good wire will not have continuity if it is isolated.

Posted on Apr 10, 2010

  • 4803 Answers

SOURCE: tail light fuse blows immediatly it used to take a

There is a short circuit to ground. I am constantly preaching that it does absolutely no good to replace a blown fuse until the cause of the blown fuse is found. Fuses do not blow for no reason. If you have a blown fuse it means that you have a circuit overload that could potentially burn you truck to the ground. Simply replacing the fuse will only cause another fuse to give up its life to save your truck from roasting. On pickup trucks with trailer hitches, the first place I look for a problem with tail lights is in the trailer wiring harness. They are usually not installed properly. I have seen several of the plug-in type trailer harnesses (the kind that simply plugs in at the connector between the body harness and the bed harness) short internally. You can usually fix the tail lights by simply disconnecting the trailer harness and plugging the body harness back into the bed harness.

If this does not fix the problem, the tail light circuits will have to be traced from the fuse all the way back to the lights to find out where the short is.

Posted on Dec 19, 2010

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Fusebox location

Relay Center Cooling Fan Controller
  • Located behind the left side of the instrument panel.
Cooling Fan Controller Module
  • Located behind the right side of the instrument panel.
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  • Located in the air conditioning cooling fan control module.
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  • Located under the left side of the instrument panel.
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  • Located behind the glove box on the right side of the instrument panel.
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Horn Relay
  • Located in the fuse block.
Let me know if this helps. If not, let me know.

Circuit Protection The fuse panel is located below and to the left of the steering column.
Fuses are a one-time circuit protection. If a circuit is overloaded or shorts, the fuse will blow thus protecting the circuit. A fuse will continue to blow until the circuit is repaired.

Main fuse box located on driver's side to the left of the steering wheel, above the brake pedal.


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Check in the Fuse Relay Box under the Hood for Relays that Correspond with the Problems and Replace them, A Bad relay could cause the Blowing Fuses Problem also.

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