On with checking the voltages with and without the new solenoids and without having the engine on readings on some of the wires going to the wiper looked to be higher, however it is difficult to know 100% as the way the motor works means the load on each wire varies over the full sweep and hence the meter fluctuates and I do not have an old style analogue meter which would dampen the variation.
I also tried it with the engine running with similar changes as far as I could tell. We are only talking maybe half a volt, so not the end of the world, but will be interesting to try in real life.
Testing was cut short at this point as I noticed a reasonable sized pool of liquid under the engine which was more than a shock as the engine has never had more than the odd drip previously, usually from the rear driveshaft seal. The liquid was oil, specifically engine oil and after jacking up and getting under the car it looks to be coming from one of the exhaust studs which go into the main oil gallery, oh what joy that is going to be to remove, reseal and replace. The nut came off without a fight and now just ordered a set of stud extractors to remove the stud, hopefully without having to remove the manifold. I Dod wonder if it was from the Cambodian gasket, but that looks to be ok, time will tell. The odd thing is on restarting the engine, no more leak, which must mean it has been the recent colder weather with leaving the car without starting it for the last month has caused the sealant on the stud to fail.
After this excitement applied some cavity coating (Bilt Hamber Dynax S-50) to the sills and the top front crossmember. When it has dried, I will revisit with the endoscope to see how much I have managed to cover with it.
Peter