Early Heater unit: Anyone recall the function...
 

...of these two relays on an early car?

http://www.mikepellegrini.com/Graphi...654cropped.jpg

I'm in the process of finally reassembling my dash and everything and can only find one plug with that pattern of connector. This is on the driver's side, way up under everything.

I believe both relays were plugged in when I took it all apart but it's been so long since I disassembled it I just can't recall.

Well thats a pretty common prong configuration. I dont think we can do any more than narrow a list of possibitlies. What you can do is look at the part numbers on those bad boys, no?

Otherwise you'll probably notice what isnt working.

I figured it out finally. The answer is that it one relay had nothing connected to it. The other I did have a connector for. The missing plug was found with other stuff hooked up to it - looked like a mod from a PO that provided power for the radio.

All the spaghetti of wires found homes. I never thought it would be possible, but everything works! God, I never wanna do that again!

I went from this:

http://www.mikepellegrini.com/Graphi..._8640small.jpg

To this:

http://www.mikepellegrini.com/Graphi..._8637small.jpg

To this:

http://www.mikepellegrini.com/Graphics/DSC_1510.JPG

But it was really painful getting there.

I replaced the two heater hoses, the heater core, the heater valve and put a Coverlay dash cover on. To make it easier to access the heater valve and hoses, I took off the intake manifold and the Oil Air Separator.

I used the Coverlay dash cover as opposed to the Classic 9 Leather shop product for two reasons: the leather dash cover is (I think) over $300 and the fitting instructions leave much to be desired.

The whole basis of making it look good is to provide a sound foundation - you have to strip the old vinyl off the dash and fill in all the cracks/crevices and then sand it down flat. Then you stretch the leather cover over it and glue it in place.

I actually found a donor dash and stripped it and sanded and filled - but it still looked like crap. It was uneven and seemed like the whole thing wanted to crumble even as I looked at it. I just couldn't imagine stretching a $300 leather cover over a piece of crap.

I'd given up on the idea of finding a good condition early dash.

So the Coverlay product - at $120 - seemed like a good idea. It fitted precisely, covering the damaged portions. So while I had the dash out, I glued it down very securely, then clamped it down with about a dozen clamps and let it sit overnight.

http://www.mikepellegrini.com/Graphi..._8653small.jpg

I think it looks pretty decent. I think most people (even some 944 people) would think it's stock. Whichever, it's way better than my old pockmarked, crevasse ridden dash.

I've got a few more minor cosmetic things to do then I'm done. I think that's enough 944 wrenching for some time...

I think you're right about removing the dash to glue one of these covers on - I put one on the 85 while the dash was installed - very difficult to position and keep in place until silicone cured - and you need more silicone applied than they suggest as when it heated up in sun cover would warp and lift where there was no silicone - I had to remove it and re-install after scraping all silicone off - but it does look good now

I only used the tube they provided. Hopefully it's enough.

I did parts of it a couple times. A troublesome spot was above the main front heater vent - I re-did that a couple times because there were bits that stuck up when I took the clamps off.

We'll see what happens when the sun comes out.