Technical Warning Lights

[geizabreak]

My injector light started to come on and off today. Stuck some redex in anything else I should look for ?
Battery light also on intermittent. When engine at idle notice that lights sort of flicker on and off. You can also see it on clock during day when lights not on. Alternator is only year old. Belt tension looks to be ok.
Anyone got any ideas?

 

[T14086]

Whats the alternator charging at (at back of alternator) then at battery also check earths.

 

[geizabreak]

Thanks thought about the earths. Three places I think. Check it tomorrow. Dont have multimeter to check voltage.