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Wording switch box 1977 20hp

Install switch box 20hp merc

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2005 merc grand marquis Headlights keep blowing a fuse


Does your Grand Marquis have head lamps with auto lamps ? Which fuse keeps blowing ? Could be a shorted LCM - lighting control module ?

Lighting Control Module (LCM)
The LCM eliminates the electronic interference and heat associated with the thermoelectric devices used previously. The LCM is a microprocessor-based module that controls several vehicle subsystems. It responds to electrical input signals from various switches, sensors, and external modules..

Visual Inspection Chart Mechanical Electrical
  • Headlamp switch
  • Central junction box (CJB) fuse(s).
    • 1 (15A)
    • 9 (20A)
    • 26 (10A)
    • 15 (7.5A)
    • 7 (10A)
  • Headlamp bulb
  • Circuitry
  • Headlamp switch
  • Lighting control module (LCM)
  • Underhood power distribution box (PDB)
    • F104 (40A)
    • F01 (20A)
    • F02 (25A)

Feb 12, 2017 | Cars & Trucks

1 Answer

Awd merc 02 stalled in gear wont crank or fire starter pcm dtr and relays all ok transponder in keys ok ignition relay ok think ignition switch problem ? bench tested starter new bat no burned wires


Awd merc 02 ????? Mercury what ? Transmission range switch is input to the PCM . If the PCM thinks it's in gear I would look at this part . Read input data from range switch to PCM on a scan tool that can do that . Transceiver for Pats is around the ignition lock cylinder behind plastic cover ,

Dec 19, 2016 | Cars & Trucks

1 Answer

Merc 230 slk 1998 stalls when put into gear unless you are very quick


check the gear box fluid levels this is usually the cause of most merc faults on the box

Mar 18, 2013 | Mercedes-Benz Cars & Trucks

1 Answer

My 1996 Merc c200 wipers won't turn off.


bad connection on the wiper motor or a fulty switch. check connections for corrosion first because that's free then move to switch if the problem still exists

Mar 15, 2013 | Cars & Trucks

2 Answers

Looking for left headlight relay location on 2004 c240


dont know what model or age this merc is but i have a 1994 c180 and that has relays for the head lights they are in fuse box have you checked conections and bulb does the rear lights come on y/n same side or a faulty switch but dont think its this

Oct 17, 2012 | Mercedes-Benz C240 Cars & Trucks

1 Answer

I have a subaru legacy 1995 estate, it's the boxer twin turbo and I can't get the reversing lights to work that are on the tailgate. I have checked the fuse (wording on the box all in *** but I have a...


The switch is call backup light switch.

Inspect / clean the entire unit end to end.

Spray WD-40 or similar fluid on the plastic male and female socket ends to rule out bad contact points.

You may use a meter to check the socket for conductive resistance (when pressed)

I attached two pictures to help you identify the plastic socket that you need to disconnect and clean.
UK/International switch may look sightly different from USA version.

Remove / adjust this switch on level ground.
Transmission/gear fluid will leak out during removal.
MAKE SURE THE ENGINE and TRANSMISSION/GEAR BOX IS COLD before removal.
Top off / inspect all fluid level after switch installation.

This backup switch retail for around $45 USD.

Good luck


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Apr 25, 2010 | Subaru Legacy Cars & Trucks

1 Answer

Merc c class heater problems centre blowing cold and sides hot


Bad vacuum pod, try using a mini vacuum and the on the valve block behind the glove box take suction on each one till you find the bad one.

Jun 10, 2009 | 1996 Mercedes-Benz C-Class

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