dodgy chargeing?

[mightymanx]

hi there i have a bit of a problem with my chargeing system if i use the car it the day it seems ok but if i use it at nite with lights etc then if you go to start it the battery sounds flat i have rewired the top two wire on the alternator so there ok.
but i read some were if there the wrong way round as they have been converted to push on connectors it wont charge so wich side of the alternator should the yellow wire go?
also i have a volt gauge in the car that reads 13.5 and doesnt change when the lights are on etc so could my alternator be on its way out or are there and other wire i need to check i have also renewed the eaths at the block to bulk head and battery thanx?

[mightymanx]

any ideas?

[boysie]

sounds like the battery may be on the way out,and not holding charge

do the lights go bright when revving engine and dim when revs lower? or does volt gauge fluctuate when revving?

[mightymanx]

battery looks new but who nos how old it is lol i got the volt meater on it before and when on tick over with the lights and other electrics on the volts were 14.3 at the battery terminals and yes the volt meater withh flutuate when the engine revs not looked at the lights while reving

[Os8472]

If your seeing those kinda volts with the engine running then the battery is f**ked

[TNT ANDY]

the Voltage is bang on @ 14.x volts when running. Get a drop test done on your battery and see how you get on. You'll probably find that it's that that's goosed. Kwick fit etc should do a drop test

[mightymanx]

ok thanx for every 1s help we dont have a kwik fit on the isle of man but we do have a rapid fit ats etc so ill see if any of them can test the battery thanx :agree:

[Os8472]

one other thing, once you've replaced the battery, replace the earth from the battery to the body work, yes it might be tight but these cars are 20+ years old now and as any sparky will tell you, wiring under heavy load will brake down over time