Mustang MonthlyHow To Interior Electrical
How to Identify 1970-1973 Mustang Turn Signal Switches
There are four basic types of turn signal switches for ’70-’73 Mustangs and here’s what you need to know about them
Classic Mustang turn signal switches evolved quite a bit between 1965 and 1978. For 1967-’69 there was the introduction of the integrated emergency flasher and a built-in cancelling mechanism, as well as the addition of a tilt option with a completely different switch. For 1970 the steering column changed with the ignition cylinder moving to the column and the additional key warning buzzer activator along with a new turn signal switch design. The turn signal switch changed again in 1975 when they moved the wiper switch from the dash to the turn signal lever.
What did change considerably was how these switches were connected to the main wiring loom and how they were constructed as changes to steering columns came about, according to Garrett Marks of Mustangs Etc. in Los Angeles.
From 1970-’73 there are four replacement turn signal switches and corresponding part numbers. The ’70 model year had a mid-year change in switches for both the non-tilt and tilt columns. D0ZZ-13341-A (non-tilt) and D0ZZ-13341-B (tilt) switches were replaced by the D0ZZ-13341-C (non-tilt) and D0ZZ-13341-D (tilt) on January 15, 1970. The ’70 Mustang had its own factory-installed D0ZZ turn signal switch with a small round Emergency Flasher button, which was briefly available as a service part until it was replaced by the D2AZ-13341-C and D2AZ-13341-D. The ’71 Mustang used the D1AZ-13341-A (non-tilt) and D1AZ-13341-B (tilt) switches, which were also serviced by the D2AZ-13341-C (non-tilt) and D2AZ-13341-D (tilt) in 1972.
D2AZ-13341-C is the ’70-’72 factory and service replacement non-tilt column turn signal switch. Aside from the hazard light switch button, which is more like a T-handle and readable from the driver’s vantage point, it is the same as the D0ZZ-13341-A and C switch, including horn slipper contacts that are far apart.
The D2AZ-13341-D switch is for ’70-’72 tilt columns and can be identified by the turn signal lever pivot fulcrum and horn slipper contacts close together. This switch replaces the factory installed D0ZZ-13341-B and D0ZZ-13341-D switch with the small round emergency flasher push/pull button.
Turn signal switches for the Mustang line are a standalone affair for 1973 (although they do fit other Fords for other years, including LTDs and Pintos) with more user-friendly multiplex plugs. The D6AZ-13341-B switch is a standard non-tilt switch with a metal plate and close together horn slipper contacts and the T-handle hazard switch button. The D6AZ-13341-A switch is for the ’73 tilt steering column with horn slipper contacts that were close together. And like the ’70-’72 tilt switch, it has a turn signal lever fulcrum to activate the tilt function.
1. This turn signal switch, D0ZZ-13341-A (non-tilt) and D0ZZ-13341-B (tilt), is defined by its small, round “EMERGENCY FLASHER” push/pull button at 5 o’clock on the collar, according to Garrett.
2. This is the D2AZ-13341-C ’70-’72 non-tilt switch with the HAZARD T-handle push/pull button.
3. The D2AZ-13341-C non-tilt turn signal switch is the only ’70-’72 service replacement switch with horn slipper contacts far apart.
4. The D2AZ-13341-C and D2AZ-13341-D switches have this crescent-shaped multiplex plug, which was common from 1968-’72.
5. This is the D2AZ-13341-C switch shown earlier with the HAZARD T-handle push/pull button. Aside from the HAZARD button, this switch is identical to the D0ZZ and D1AZ production switches.
6. This is the D2AZ-13341-D switch for ’70-’72 tilt steering column with the crescent-shaped ’68-’72 multiplex plug. Currently available reproduction switches require you to reuse the old plug and wire ends via butt connectors.
7. This is the tilt-column unlock pivot, which is controlled by the turn signal lever. The turn signal lever pivots here and presses against the tilt column release lever to achieve unlock status and tilt control. The turn signal lever for a tilt steering column has a plastic sleeve near its threaded base to bear against the tilt column release pin.
8. At first glance, the D2AZ-D switch doesn’t look much different than the fixed column D2AZ-C or D0OZ switch because the pivot is hidden when the switch is installed. This column has a non-tilt turn signal lever void of the plastic sleeve.
9. With the tilt collar removed, you get a close look at how the release works. The turn signal lever bears against this release lever and pin. Push on the turn signal lever and it releases the tilt function for freedom of adjustment.
10. Here’s the release pin at rest without pressure on the turn signal lever.
11. Here’s the release pin depressed by the turn signal lever for tilt release.
12. Roughly 180 degrees around on the other side is this release lever, which unlocks the tilt function for adjustment.
13. Here’s the D6AZ-13341-B non-tilt turn signal switch for the ’73 Mustang with the metal reinforcement plate.
14. This is the reproduction D6AZ-13341-B turn signal switch for the ’73 Mustang. It has a redesigned, crescent-shaped user-friendly multiplex plug that makes service a snap. The front of this switch is shown in our lead image.
15. Close-coupled horn contact slippers are used on ’70-’73 tilt columns and all ’73 fixed columns.
16. This redesigned multiplex plug makes turn signal switch swaps a snap. Although it arrives already installed with fixed column switches, it is not attached with tilt-column applications because you have to feed the wires through the column first. Slide the red retainer out and all wire pins come out if necessary. Just keep track of where the wires were.
17. This is the ’73 D6AZ-13341-A turn signal switch for tilt-column applications, which includes the same pivot witnessed on ’70-’72 tilt column switches. This switch does not have the metal plate like we see with fixed columns.