Identify which switch I need

[StevieMac]

Hello All,

I have a 70 Duster that was a /6 and now has a 340. When I bought the car, it didn't have the wiper switch in it. I have looked at mymopar.com to try to get a part number so I could see if one is available out in the world, but the one that is listed there doesn't appear to match the plug in the car. I have also searched here, but not finding anything either... Can someone give me the correct part number for the switch that will work with the attached photo?

Cheers!

 

[67Dart273]

You need to find out what motor you have first. You can download a service manual from MyMopar for free. The 3 speed motor looks quite different from the 2 speed.

 

[MoparMike1974]

Three speed wiper switch will have a ceramic resistor on the side. No resistor on the two speed switch.
Its easy to identify the wiper motor with a glance. If it sits sideways, parallel with the firewall then its a 3 speed. If it sticks straight out of the firewall its a two speed.

 

[StevieMac]

Three speed wiper switch will have a ceramic resistor on the side. No resistor on the two speed switch.
Its easy to identify the wiper motor with a glance. If it sits sideways, parallel with the firewall then its a 3 speed. If it sticks straight out of the firewall its a two speed.

So looking at this, it looks like a 3 speed based on your description, correct? If so, which switch should I look for?

Thanks again!

 

[67Dart273]

Yup. 3 speed

 

[StevieMac]

So I think this is the correct switch, 2770380. Thoughts?

Washer/Wiper Switch# 2770380 - Variable - 1970-71 - A - E - Body - NOS - Washer/Wiper Switch - Switches - Electrical - Parts

 

[MoparMike1974]

That looks like an E body switch. Might fit some B bodies too. Im not exactly what switch the pre-72 A body used. Here is a 72+ 3 speed switch.
MOPAR 72-74 A & E-BODY 3 SPD WIPER SWITCH PN-3488764 CUDA CHALLENGER DART DUSTER | eBay
Notice the resistor, that is how they get the 3rd speed out of it.

 

[RustyRatRod]

You have a 3 speed motor so you need a 3 speed switch for 70 Duster. Is this a trick question?

 

[4spdragtop]

As 67dart273 said, download a parts manual....get the part # that goes with 3spd(variable) switch to match your motor.

 

[StevieMac]

That looks like an E body switch. Might fit some B bodies too. Im not exactly what switch the pre-72 A body used. Here is a 72+ 3 speed switch.
MOPAR 72-74 A & E-BODY 3 SPD WIPER SWITCH PN-3488764 CUDA CHALLENGER DART DUSTER | eBay
Notice the resistor, that is how they get the 3rd speed out of it.

Thank you MoparMike

 

[StevieMac]

As 67dart273 said, download a parts manual....get the part # that goes with 3spd(variable) switch to match your motor.

So, if you look at the parts list, all I see are two speed switches, hence my question. Since replacements are so expensive, I thought that I would ask others instead of just throwing money away.

 

[4spdragtop]

Parts list from factory manual?

So, if you look at the parts list, all I see are two speed switches, hence my question. Since replacements are so expensive, I thought that I would ask others instead of just throwing money away.