I am re-wiring my 70 and it has been so long now since I drove it that I cannot remember if the side marker lights are also turn signals. I do not think they are since their are only 2 wires coming out of each bulb and I figure they are positive and negative. Just want to be sure before it cut any wires.
Does anyone know what bulb part number "COULD" be used to make them flashers also? Don't want to make any new housing or anything; just wondering if there is an2 element bulb out there (a running light element and a bright flash element).
Thanks,
Mike
No they don't, but it can be done. I did mine about five years ago following this thread from FTE
http://www.ford-trucks.com/forums/432817-making-side-marker-lights-blink-with-turn-signals.html
This wiring modification will enable the front side marker lights of any car
to blink _with_ the turn signals (if running lights are off) or to
_alternate_ with the turn signals (if running lights are on). Normal
operation of the marker lights is not affected. The procedure works
on any car with parking and turn signal lamps at the front, even if
the turn signals are not dual-filament (#1157/1157A/1157NA) bulbs,
The marker lamps must not be single-wire designs which rely on the
car body for grounding. If the marker lamp has two wires connected
(power & ground), the procedure will work. (most ford sidemarkers use a 2 wire rubber socket that plugs into the plastic marker lense)
Wiring to the marker lamp is rearranged such that the lamp bridges the
parking and turn signal circuits, drawing power from whichever circuit
is "hot" and grounding through whichever circuit is dead.
The whole job involves only re-routing one wire on each side. You just
need to check carefully to ensure that you've identified the right ones.
1) Switch on the vehicle's parking lights and 4-way emergency flashers.
You don't need to run the engine during this test unless the battery
is severely low.
2) Using the test light on the wiring going into each turn signal, identify
the wire carrying the blinking turn-signal power.
3) Using the test light on the wiring going into each front side marker
lamp, identify the ground wire (the one that's _not_ hot).
4) Switch the vehicle lights off. You don't need to disconnect the battery.
5) In the next step, you're going to snip the ground wire coming from the
marker lamp and connect that wire to the turn signal's power feed. Work
out the best way to snake the marker lamp ground wire around to a point
where you can tap it into the turn signal's power feed wire, using an
extension of 14-gauge wire if necessary. Pay attention to what cavities
or openings might be filled when you reinstall the light assemblies, if
you removed them previously. You don't want to pinch the rerouted wires.
Note: Don't get confused here. The idea is to run the ground wire
FROM the marker lamp TO the turn signal. Currently it runs
from the marker lamp into the wiring harness and grounds
somewhere. You're _not_ trying to connect the harness ground
to the turn signal!
6) Cut the ground wire coming from the marker lamp, giving yourself as much
wire length as possible from the marker lamp to the cut point. Tape the
cut end of the ground wire that goes into the vehicle harness and stuff
it out of the way.
7) Connect the ground wire leading from the marker lamp to the hot lead
going to the turn signal on that side. Tape or otherwise weatherproof
the connection, and you're done.
