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    Headlight switch issues

    I have tried to find my problem but I cant. When I go to turn on my lights after work, the parking lights come on, but the headlights do not. At least not at first. I have to turn them off and on for about 15 minutes before the headlights will actually come on. I thought it was the hids, but I put standard 9006 bulbs in and the same issue.

    Would the headlight switch malfunctioning cause the parking lights to come on but not the headlights? Or should I look somewhere else.


    1990 Colony Park, with HO swap.

    Previously:
    1990 Lincoln Town Car Cartier.
    88 CVLX
    01 Marquis

    #2
    I've had the same exact thing happen to me once last year. Parking lights came on but not the headlights. Thankfully it hasn't happened again and I plan on doing the relay mod when the weather gets warmer to take the load off the headlight switch.

    I'm interested in what people weigh in on what it is. My guess would be the contacts in the headlight switch, not sure though.

    '78 LTD | '87 Grand Marquis | '89 Crown Vic (RIP) | '91 Grand Marquis (RIP) | '94 Town Car (RIP) | '97 Town Car (RIP)

    Comment


      #3
      It has the relay mod, so my guess is its in the switch itself. Im tired of getting stuck at work for 30 minutes while they take their time to come on.


      1990 Colony Park, with HO swap.

      Previously:
      1990 Lincoln Town Car Cartier.
      88 CVLX
      01 Marquis

      Comment


        #4
        I had the same issue in my 87, even after doing the relay mod. Adding a relay does take the load off the circuit, but doesn't magically fix bad parts or connections. Was expecting it to be the usual melted headlight switch connector, but it was surprising fine. Turned out to be a melted multifunction switch connector instead. Now I'm assuming this is on your 90, which is completely different. Just follow the headlamp circuit, you'll find the bad contact/part eventually.
        2020 F250 - 7.3 4x4 CCSB STX 3.55's - BAKFlip MX4
        2005 Grand Marquis GS - Marauder sway bars, Marauder exhaust, KYB's
        2003 Marauder - Trilogy # 8, JLT, kooks, 2.5" exhaust, 4.10's/31 spline, widened rear's, metco's, addco's, ridetech's 415hp/381tq
        1987 Colony Park - 03+ frame swap, blown Gen II Coyote, 6R80, ridetechs, stainless works, absolute money pit. WIP

        Comment


          #5
          My multi function switch doesnt work either. The turn signals dont cancel. Good to know that its all connected. Trying to avoid spending $ on this thing.


          1990 Colony Park, with HO swap.

          Previously:
          1990 Lincoln Town Car Cartier.
          88 CVLX
          01 Marquis

          Comment


            #6
            I'd look into replacing the Multi switch/connector (if required) since it appears you need to do it anyway. Then, you can see where you are at.


            "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

            "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

            "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

            Comment


              #7
              I might, I dont have the car for much longer, so if I can get by with replacing a connector, I want to go that route.


              1990 Colony Park, with HO swap.

              Previously:
              1990 Lincoln Town Car Cartier.
              88 CVLX
              01 Marquis

              Comment


                #8
                Non-cancelling turns signals is an actual mechanical part failure not electrical related.
                ~David~

                My 1987 Crown Victoria Coupe: The Brown Blob
                My 2004 Mercedes Benz E320:The Benz

                Originally posted by ootdega
                My life is a long series of "nevermind" and "I guess not."

                Originally posted by DerekTheGreat
                But, that's just coming from me, this site's biggest pessimist. Best of luck

                Originally posted by gadget73
                my car starts and it has AC. Yours doesn't start and it has no AC. Seems obvious to me.




                Comment


                  #9
                  Originally posted by 87gtVIC View Post
                  Non-cancelling turns signals is an actual mechanical part failure not electrical related.
                  True 'nuff which is why I said he needs to change it anyway. May have nothing to do with the original issue but still needs to be done.


                  "Hope and dignity are two things NO ONE can take away from you - you have to relinquish them on your own" Miamibob

                  "NEVER trade your passion for glory"!! Sal "the Bard" (Dear Old Dad!)

                  "Cars are for driving - PERIOD! I DON'T TEXT, TWEET OR TWERK!!!!"

                  Comment


                    #10
                    the MFS is pretty easy to swap out and isn't that spendy... plus, you can just pull the column covers off and check the connector. It may just require pinching the female connectors with a pair of needle nose to make them grab better and shoving the connector back on.

                    Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                    rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                    Originally posted by gadget73
                    ... and it should all work like magic and unicorns and stuff.

                    Originally posted by dmccaig
                    Overhead, some poor bastards are flying in airplanes.

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                      #11
                      So my battery drained and I can not get it started again. I replaced the fuse that blew when my lights finally shorted out. All I hear is a click when trying to start it. It does not actually turn over.


                      1990 Colony Park, with HO swap.

                      Previously:
                      1990 Lincoln Town Car Cartier.
                      88 CVLX
                      01 Marquis

                      Comment


                        #12
                        yup... you've got problems. Can you jump it? If so... battery... if not, disconnect your battery and try again (shorted batteries suck). If none of that works... check the fat cables down to the starter and make sure nothing is loose. If you still can't get it to turn over... put a wrench on the big bolt at the crank and try to turn the engine... if it's not locked up, could be the starter. Also, could be the ignition switch if the center bolt broke free (did this on my 93) and the harness is a little loose.

                        Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                        rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                        Originally posted by gadget73
                        ... and it should all work like magic and unicorns and stuff.

                        Originally posted by dmccaig
                        Overhead, some poor bastards are flying in airplanes.

                        Comment


                          #13
                          I tried jumping it but thats what it did, it just clicked. Battery was disconnected overnight. The odd thing is I never had any starting issues till this headlight thing.


                          1990 Colony Park, with HO swap.

                          Previously:
                          1990 Lincoln Town Car Cartier.
                          88 CVLX
                          01 Marquis

                          Comment


                            #14
                            check the ground cable to the frame/engine. If that thing is loose... that could cause it.

                            Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
                            rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)

                            Originally posted by gadget73
                            ... and it should all work like magic and unicorns and stuff.

                            Originally posted by dmccaig
                            Overhead, some poor bastards are flying in airplanes.

                            Comment


                              #15
                              The switch must be fried. It pops the fuse whenever I turn the lights on. Im not keeping the car too much longer, just annoying.


                              1990 Colony Park, with HO swap.

                              Previously:
                              1990 Lincoln Town Car Cartier.
                              88 CVLX
                              01 Marquis

                              Comment

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