Wondering if anyone's seen this before...battery warning light goes off after engine fires up but comes on again 20 secs later & then stays on apart from a regular
off every minute or so, with the idle revs & hdlamp brightness dropping momentarily at same time. Seems maybe the alt is kicking- in & out. Belt in fair condition & not slipping, all fuses OK, batt & alt connections seem OK. Could it be a relay & if so how do I test them? Or am I likely needing a new alt?
Mrk 6, 54 plate, 2.4 RWD, SWB panel van.