I've progressed a little with the heater in so far as I've removed the old matrix and bought a new compact modern one with an additional axial fan. I'll be adding a water control valve and also an electric pump to the heater circuit. I'll post some pictures once I have it modified and fitted. I also need to find the coolant leak.
I fitted a new temp gauge, which still reads quite high (130 degrees) which is not right. I can't find any regulators for the instruments under the dash, so I think that is the next avenue to investigate. My research indicates the output from the regulator for the instruments should be 10 volts. It's probably closer to 14 volts so if I do the maths (130deg x (10v/14v)) = 93 deg, which assuming the maths is correct, is a OK temperature.
The tail lights and park have stopped working and the high beam only works if the RH indicator is on. I figure the high beam is related to the switch, so I'll look at that next unless anyone can suggest otherwise. I've had a good rummage about under the dash but all seems ok at the switch (The panel lights come on, so the switch is ok) Looking at the wiring diagrams it seems tail lights & side lights are all on the same circuit, so the fault is close to the switch before the circuit splits. It's most likely I have dislodged something in my under dash rummaging. There doesn't seem to be a fuse on this circuit either
I'd say about 20% of the wiring under the dash is redundant, being dead ends taped over or unconnected spade terminals. I think I will have to take the dashtop off and have a cull.
I've got some wiring diagrams from the CD, but wonder if there are any full wiring diagrams in existence.
