Sonny
It’s all fun til the rabbit gets the gun.
Is there a way to connect the wiper arm linkage under the dash without removing the heater box? I can touch the motor shaft with one hand but I can't add the washers and clip.
The latter. The 2 wiper linkage arms to the motor shaft that takes the plastic cam and the slip on washer/clip. all above the heater box.Are you trying to connect the motor to the linkage? If so, try from the top... it's tight & you might have to tape the nut into a wrench to get it started. OR, are you connecting two sections of the wiper linkage arms while they're in the car?
I have done it more than once through the radio hole.The latter. The 2 wiper linkage arms to the motor shaft that takes the plastic cam and the slip on washer/clip. all above the heater box.