Hey Stuart,
So far the ISS stuff seems to be doing fine. I used their tac, fuel press, oil pres, oil temp, CHT, EGT, volt meeter and fuel level. The TAC uses a little TAC generator right on the tac drive instead of picking up off the "P" lead. This way if the tac should somehow go to ground it won't kill the mag. The CHT and EGT use 14 ga wire from the probe to the gauge instead of having that much thermocouple lead and so far they seem to be accurate. I have their fuel gauge installed with a SKY SPORTS capacitance sender and the gauge has a RED ZONE. I set the top of the RED at 4 gallons. I mounted the senders for fuel and oil on a manifold from VAN'S and have a switch on the manifold that is activated by the oil pressure. The switch (also from VAN'S) turns on a RED LED on the panel any time the oil pressure is below 15psi and also turns on the HOBBS when the oil pressure is above 15psi. I really like having gauges that have all matching faces and they are center pivot with 270deg movements and they are lighted. I'll post a photo.
So far the ISS stuff seems to be doing fine. I used their tac, fuel press, oil pres, oil temp, CHT, EGT, volt meeter and fuel level. The TAC uses a little TAC generator right on the tac drive instead of picking up off the "P" lead. This way if the tac should somehow go to ground it won't kill the mag. The CHT and EGT use 14 ga wire from the probe to the gauge instead of having that much thermocouple lead and so far they seem to be accurate. I have their fuel gauge installed with a SKY SPORTS capacitance sender and the gauge has a RED ZONE. I set the top of the RED at 4 gallons. I mounted the senders for fuel and oil on a manifold from VAN'S and have a switch on the manifold that is activated by the oil pressure. The switch (also from VAN'S) turns on a RED LED on the panel any time the oil pressure is below 15psi and also turns on the HOBBS when the oil pressure is above 15psi. I really like having gauges that have all matching faces and they are center pivot with 270deg movements and they are lighted. I'll post a photo.