Hi Dan,
That's a great explanation of troubleshooting. Thanks, I'll remember
it.
As I have been cleaning up wires, have been putting a dab of "NoOx", a
grease recommended by an electrician friend, who says that it reduces
corrosion at connnections of dissimilar metals.
Bob
On Thu, 30 Oct 1997 16:34:09 -0500 (EST) DANMAS@aol.com writes:
>Tue, 28 Oct 1997 08:58:34 +0100 John Van syckel
><vansyck@hq.1perscom.heidelberg.army.mil> wrote
>Subject: Slooow Directionals
>
>< Quick question which probably everybody know the answer to (except
>me).
>< The directionals on my 1971 MGB blink at normal frequency when the
>< headlights are off. When the headlights are on the right one
>flashes
>< much slower and the left one even slower than the right one.
>
>< What do I look for?
>
>Jay:
>
>Usually, when the turn signals get slow, there is either a bad
>connection or
>undersized bulbs at fault. If both sides are slow, the bad connection
>is in
>the supply side. If just one side is slow, the problem is usually a
>bad
>ground connection on that side. Turn signal flashers are particularly
>sensitive to reduced voltage or current. They are made this way on
>purpose to
>provide a warning when there is a problem - otherwise, you could go
>for years
>without knowing that the lights are not working (not you, of course,
>nor any
>other LBCer; I'm speaking of the great unwashed civilian population
>here!)
>
>Since your turn signals work fine till the headlights come on, your
>turn
>signal circuits are OK (well, there is a small problem in the left
>side,
>since they are a little slower than the right). The problem lies
>somewhere in
>the circuitry where the two circuits are common. Because these two
>circuits
>(headlights and turn signals) are separate, there is no current
>sharing, so
>the problem has to be one of reduced voltage. Somewhere, in a
>connection that
>feeds power to both circuits, there is a bad connection. With the
>lower
>current drain of the turn signals, the resistance of this bad
>connection is
>not enough to drop sufficient voltage to be a problem. With the added
>current
>draw of the headlights through this connection, though, there is
>enough
>current to produce a large voltage drop.
>
>What you will need to do, is check the wiring that is common to both
>circuits. You will only need to look at the power side, not the ground
>side,
>because we know the grounds are OK, or the turn signals wouldn't work
>with
>the headlights off.
>
>Power to the headlights comes from the battery to the headlight switch
>via a
>Brown wire. Power to the turn signal flasher comes from the battery to
>the
>ignition switch via a Brown wire, from the ignition switch to the fuse
>box
>via a white wire, from the fuse box to the flasher via a green wire.
>The only
>wires in common are the Brown wires. There is where you should be
>looking.
>Check all of the brown wires and all the connections in these wires.
>When
>these have all been checked and corrected, the turn signals should
>work fine.
>While you are at it, it would be a good idea to check ALL the wires
>and
>connections in the car, and save yourself problems later on down the
>road.
>
>Good luck!
>
>Dan Masters,
>Alcoa, TN
>
>'71 TR6---------3000mile/year driver, fully restored
>'71 TR6---------undergoing full restoration and Ford 5.0 V8 insertion
>- see:
> http://www.sky.net/~boballen/mg/Masters/
>'74 MGBGT---3000mile/year driver, original condition
>'68 MGBGT---organ donor for the '74
>
|