Wiper wiring

[PGas32]

One of the last things I need to finish up for my SPB is wiring up the wipers so they operate at a single speed off of a dash-mounted switch...or maybe even variable speed with a knob. Either way, can someone explain in very simple terms what exactly needs to be done? I have the wiring diagram, but basically everything I know about electrical stuff has been learned throughout this build project and I'm not quite at the point of building my own circuits yet.

Thanks

[rastta]

All I know is that I have two relays on my car that I had to replace. They go to a knob on the dash that has three positions. I didn't trace the wires back to the switch though.

[trygve]

My notes from installing my custom switch panel in the SPB show wire #49 being the key wire. In the wiper stalk connector there are 3 connectors you replace. One comes from #49 and the other two go back (switched) to the wiper motor. There are 3 terminals/wires on the wiper motor (and ground). Let's call them T1, T2, T3. (I don't recall how they are actually labeled or colored. Bentley manual shows it.) T1 is directly wired to #49. If T2 is connected to #49, wipers go slow. If T3 is connected to #49, wipers go fast. So, I put a DPDT on-off-on switch there. Middle is off, up is fast (49-T3), down is slow (49-T2). You could just use a single pole switch if you only want fast on.

[PGas32]

Awesome, that should be enough to get me on my way. I really like that panel setup, by the way! Is that a carbon wrap of some sort? Or the real deal??

[trygve]

It's not carbon fiber. I found a local guy who does "water transfer printing" / "hydrographics". Faux carbon is one of many patterns possible. Leopard print or camouflage didn't seem racy enough. They also did the rest of the panel surround, and both engine covers. It looks great and adds 10 hp.

[RedTele58]

^^^^^^^^
Trygve - that looks great!

[trygve]

Thanks! It was not expensive. Big improvement when the engine covers look a little bit beat-up.

[thstone]

Trygve, looks fantastic! Gotta be worth 2 sec's per lap.