These rules don't only apply to first marriage conpatibility whether it is the 2nd marriage or 1st these rules will show compatibilty of the spouses for 2nd marriage you can also see 2nd house and it's Lord in lagna kundli and navansh and so 2nd house from moon in rashi and navansh but you will have to see all the these compatibilty points in second marriage also see dasha of both spouses always. Marriage success depends on the compatibilty of both spouses whether it is first marriage or second. I have talked about matching the horoscopes of the second spouse and person like in the above example if mars of husband is in capricon and mars of wife is in taurus the mutual position of thier mars in 5-9 . When matching two charts if the both husband wife's mars, venus, sun, moon, lagna are 5-9, 3-11, 4-10, same rashi then it is good for compatibilty on the other hand if they are 6-8 or 2-12 to each other it is not good