Warning lights

Hi.All

I have a 1992, 1.6 Eunos. Manual. 

 I have just changed the rad & all was OK there,  took it out on a test drive & all still OK. The next time i took it out (a week later) starting it from cold, the battery charge & the heat warning lights stopped on. Took it for a 10 mile run & all seemed to be OK, re started OK,  battery seems to be charging, fan belt tight. checked to see if i had pulled any plugs apart

 

Any ideas?

 

Cheers Phil

belt slip / bad contacts on alternator ;) 

was the altanator causing the problem. when i got back from an evening run the batery was flat