So I bought a hot lap timer and last time I tried it at LRP I couldn't get it to work. I think two things are the possible cause and please tell me what you think

1. I have mine mounted rather high on the roll cage just below the roof line on my front B pillar. Is this too high?

2. At LRP I had it on the passenger side (pit side) at NHIS I will need to put it on the driversside correct?