Imagine an indicator that can compare the relative price of Gold to FIAT currencies
well i did about 8-9 years ago here :-
load it up from Trade2win and follow the rules ...set whatever MA speed you want ....20 is default
if Violet Gold price is higher or lower than all other lines trade it ....as gold is clearly more or less attractive than the big FIAT currencies (and try to get Green USD on the opposite side of the Zero as well - that helps)
look at this example on daily.....on 19th June the Gold line got big at $1759 and time to buy ....its now been to $2059....not bad for an 8 year old indicator !