Today I removed the gas tank so that I could address both the inoperative fresh air blower and the wipers that were obviously put together incorrectly by yours truly.
Guess I've been in and around all the stuff in this front trunk enough that the removal was fairly straight forward.
That one nut under the dash to remove the wiper assembly is always a bugger to get to.
Step one, blower investigation.
Started out by putting my multimeter on the four inputs and things just didn't make much sense in what I was reading.
So I figured nothing lost at this point in taking it all apart and looking deeper.
6 circular clips pried off with a screwdriver and the 2 halves of the blower assembly were apart.
I had previously taken out the 2 screws that hold the blower assembly into the airbox.
Now I could see how things appeared to work.
Seemed to read somewhere that sometimes the contact points get corroded up and don't make very good contact preventing the electrical current front getting through.
This was starting to remind me of the horns and their problem.
I cleaned up the 2 sets of points that were closest to the blower connector.
Then I hooked some power up to the the power in on the blower motor and grounded the other 3 speed outputs one at a time.
Everything seem to be working now.
So a quick re-assembly of the blower motor into the air box and another bench test to see if the fan came on all 3 speeds.....bingo, it did.
Next I plugged the chassis connector into the blower assembly/airbox to see if the dash controls would achieve the same successful results.
They did...up to a point.
My low speed on the dash gave me mid speed on the blower and the mid speed on the dash gave me low speed with the blower.
So I flip-flopped those two wires coming into the dash controls and all was finally right with the blower.
Take away from all of this.
Don't assume everything will work even if it looks clean on an old car that you don't know the history on.
This car was basically a basket case when I received it, although from the pics it might have looked OK.
I've had to replace nearly everything with new or good 2nd hand besides fixing a bunch of items like this.
If I'd done this while I was assembling the car, I wouldn't be doing this now and having to remove and reinstall a lot of parts.
Step two, the wiper assembly.
The wipers worked fine with the two speeds, but when you turned the wipers on they would go a short distance to the left before heading off to the right to clean the windshield.
I had previously pulled the wiper assembly apart so I could repaint the frame itself.
Obviously when I reinstalled the wiper motor into the frame I had mis-clocked some of the linkage.
On the bench I hooked the motor up to a power source and watched the linkage do it's thing.
It became pretty clear that the one short linkage that actually attaches to the motor was not on correctly.
Moving it a bit and tightening back the one nut brought the desired results.
Now when you turn the wiper switch on, the wiper blades go directly right to clean the windshield as they should.
All that's left now is reinstall the wiper motor assembly, fresh air blower box and fuel tank.
One of the clips that holds the control cable onto the fresh air blower box broke so I'm waiting for some replacements to show up.
After I get the above completed and the new headlight relay installed, all the electrical items have then been tested, replaced or fixed to function as they're supposed to.
A note about the broken air box cable clip.
This was the 3rd spring steel clip that broke on me after getting them all re-plated in yellow zinc.
I've talked with the guy who does my plating and he's swears that his shop does all the correct post plating heat treating.
At this point, I don't believe it.
One part might have been chance....but not 3 spring steel parts.
Something is amiss with their process.
Either no heat treating or not doing it soon enough after plating.
I'm looking for a new plater.
Next on the to-do list it the installation of the 914Rubber main targa seal and attempt to get the doors, windows and seals all correctly aligned and fitting nice and snug.