Ethan Evans

so I have a 78 rx7, headlights work great, but the left one comes up faster than the right one, anyone know how I can make them come up in sync?

yeti

iTrader: (1)

Just a guess but perhaps the wiring is unequal and the left is getting signal quicker than the right?

j9fd3s

iTrader: (3)

i think you might lube them and then clean the connectors/ground first

Qingdao

iTrader: (3)

How fun would it be to swap the relays so they toggle left and right.

But back on topic causes could be a weak motor, binding parts, or bad grounds.

t_g_farrell

iTrader: (1)

What j9 said.

DreamInRotary

iTrader: (49)

The wire run is shorter to the left headlight, as the loom comes from the driver's side down to the left light first and then comes across to the right. But in terms of current speed between the two, it would effectively be simultaneous as the difference is only about 4 feet on a 16-ish-gauge wire.

I would concur with the lubing/cleaning of the actuator assembly, as well as trying to clean the electrical connectors of corrosion at the same time. Best of luck!

j9fd3s

iTrader: (3)

Fungus Mungus did that, its fun

yeti

iTrader: (1)

Yeah, sorry. The other suggestions would be much more likely to be the problem.

j9fd3s

iTrader: (3)

you were correct, the wiring is not equal length, and since the car is 4,000 years old it can certainly be unequal resistance.