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Thread: 65 BJ8 Front Single Lamps

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  1. #21
    Luke Skywalker vette's Avatar
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    Re: 65 BJ8 Front Single Lamps

    In reference to differences in wiring between dual lights and single lights, I may be miss stating here because i am just thinking about this without checking a schematic, the significant difference between 100/6- early 3000 and the later 3000 (BJ8) is the later dual light set up does not have the turn/brake light relay on the inner left front fender. Also the later cars have some changes to the wiring behind the dash. Having said all of that, here are my thoughts about what the car might have or need. The turn/brake light relay is really only needed for the rear lights where by the one bulb is used for the brake light and then also the turnsignal. If the car has two lights on each side in the back, a separate brake light and also a separate turnsignal light, then a relay is not needed on the left front inner fender panel. So then there is none there and maybe never was. The front turnsignals would work without a relay because they don't serve a dual purpose of turn and brake. So if the car had a later BJ8 front Shroud and a single light front shroud was substituted I believe the only wiring change needed would be that at the front lights, the wires that were in a second lamp socket would then be terminated in only one light socket. I might be all wet on this, I didn't check any schematics.
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    Re: 65 BJ8 Front Single Lamps

    Vette,

    You are correct. Each filament of the dual filament bulb on the left and right side front are either dedicated to the running light or directional. The later dual light Phase 2s differ from the single light (dual filament) wiring of the early Phase 2s up front is as you've stated, the running light is terminated in 1 lamp and the directional is terminated in the other.

    Ray(64BJ8P1)

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    Re: 65 BJ8 Front Single Lamps

    Coincidentally, the 48-page February issue of HEALEY MARQUE magazine, which was recently mailed, includes "ladder logic" wiring schematics for the six-cylinder big Healeys. (The January issue included the schematics for the BN1 and BN2, and the March issue will include them for the Sprites.)

    You, too, can receive the monthly magazine (11 times per year, with a beautiful calendar serving as the 12th issue), HEALEY MARQUE.

    Here's a look at the cover of the February issue with a detail of the original Gerry Coker drawing of an early version of the car that would become the Healey Hundred:

    HM 02.jpg

    [Click image to enlarge]
    Reid Trummel
    Editor, HEALEY MARQUE magazine



  4. #24
    Yoda HealeyRick's Avatar
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    Re: 65 BJ8 Front Single Lamps

    So my question about the wiring is this. What should Jeff look for to tell whether his wiring is from a single indicator car or a dual indicator car?

    And, BTW Reid, subscription to Healey Marque is worth it just for the articles on chimps driving Healeys.
    Rick

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    Jedi Knight
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    Re: 65 BJ8 Front Single Lamps

    I'm not really sure you could tell if it was one harness or the other. The earlier one light cars have three wires going to each fixture while the two light cars have only two wires each. So if the shroud was changed from a two light to a one, the shop would only need to connect the hot wire that originally ran to the second fixture to the empty socket on the "new" three wire fixture. So now the single fixture will operate as it should, but the ground wire to the second fixture would not have any place to go. I can't guess what any given shop might do, but I'll venture a guess that the shop would probably just remove it. An owner of a two light car can confirm or correct my thinking, but I believe the ground wire to the second fixture comes from one of the four way connectors, so all the shop would have to do is pull the bullet out of the connector, and no one would be the wiser.
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    Re: 65 BJ8 Front Single Lamps

    It might be a good idea to check the rear shroud to see if that is original to the car.

  7. #27
    Luke Skywalker vette's Avatar
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    Re: 65 BJ8 Front Single Lamps

    The early single lamp wiring harness had a relay as stated on the left front inner fender panel. If the car was originally a dual lamp car front and rear, Or I should say that if the car had a relay originally then the wiring harness in that area would now have splices there. Because the wiring would have to have been spliced around the original terminations on the relay. Another very empirical bit of evidence will be the wire circuit for the brake lights. If the car had a relay the wire for the brakes came from the brake light hydraulic switch down on the lower frame section on the right side frame near the front shock structure then it went to the relay location because it terminated at the top left terminal of the relay. This allowed the relay to control the brake lights.
    But if the car never had relay, the wire coming from the brake light switch went directly to the back brake lights. It stands to reason to me that if the car originally had a dual light front shroud it would be very easy in the electrical sense, to switch it to a single light front shroud. All that would be necessary would be to move the wires from the lamp that was eliminated to the one that was kept. Also, if I was doing it and I wanted to try to make this wiring change as unobtrusive as possible I would take the black ground wire that was on the lamp to be eliminated and terminate it with the black ground wire of the other lamp holder. Two black wires on the same terminal would be very unsuspecting.
    Now if you were switching the rear shroud from a dual lamp shroud to a single lamp shroud this story would be quite different. You would have to install a relay and change the brake wire, and also the trafficator wires from the signal flasher and relay.
    About TV Shows-
    "...you really can't restore a car in 10 days. I don't want to watch a race where people have to restore it in a week. It's not going to drive, and those cars never work. In real life, it takes years to get it right. " Jay Leno.

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