Finally had a chance to work on another task on the car -- hooking up the windshield washers. I picked up a used pump at Hershey years ago, and had meant to do this while the gas tank was out and there was easy access to everything, but where's the challenge in doing it while it's easy?
I followed @bbrock 's guidance here:
http://www.914world.com/bbs2/index.php?showtopic=361176 , and it went easier than when I wired up my previous 914, because the old car didn't have the pre-wiring for the pump in the wiper switch.
I found the brown/black wire taped to the wiring harness, just as Brent mentioned. Since I didn't want to modify the harness, I made an extension wire with a male spade on the end. I found an empty spade on a switched fuse in the fuse block and pulled power from there; the wire was run up through grommet where the main harness passes.
Since I didn't want to drill any new holes in the car, the relay is bolted to the existing hole in one of the cowl supports -- I found a 5mm bolt, so the hole didn't need to be drilled out. The pump is installed under the reservoir with VHB double-sided tape. I used the VHB tape on my previous car, and the pump was still firmly attached 5 years later when I sold the car.
