Have mine bolted to back of the head just in front of fire wall. Don't think it make any difference where it is located on the head as alloy conducts heat fairly well. Up here in Townsville it usually sits around 88 to 90 in the summer and high 70s to 88 ish in winter. My alarm is set at 95 and have only had it go off once when lugging through a river bed sand on a hot day with hard tyres. Just droped the pressure as I should of I start with and good to go again.
