I have been running an ETB Digidash Lite 2 on my car for 8 years without problems. Now 2 have occured in quick succession. The first is a wildly fluctuating oil pressure reading in steady state driving. Having done the obvious wiring checks its is still not resolved. I therefore bought a new oil pressure sender ( unique ETB part ). Not yet fitted but I am hopeful. My second problem is random operation of the shift lights. Anything above 3000 rpm even stationary and the whole Xmas tree effect lights up as if I am bouncing off the rev limiter. On the road with bumps the effect is randomised with respect to speed. I have spoken to ETB on this without much help forthcoming but in the conversation I learned that production of the Digidash lite ceased about 6 years ago. So if the worst happens and I cannot find a wiring problem and need a replacement what do I choose. I hear Acewell mentioned but what are the other 'locost' options that members have experience of? TIA

check the 'earth' ie explicitly check the battery neg to the unit.