that is just a noise supressor (i think), its to stop static interference on your radio
wired it up correctly (doh)Curtis129
How did you fix it?
This sounds like what mine is doing 12.77 volts @ 2000 rpm
Hi ITSA Im'e doing this with my alt. why the two thicker cables from the stud on rear off alt., do they both go too main batt. +
now i have rewired mine so the colours will be different
the 2 top wires from factory should go to a plug ( mine are both red) factory should be one white with red stripe (D+) the other should be white and a little thicker ( sense)
the main power out just under them (i ran 2 thick red wires) factory should be a thick white wire that bolts to the alt, i have pulled the rubber boot back a bit so you can see the nut,
the thick white wire is still connected on mine but it has a black cover over it as seen running along with the red wires
in that pic one goes to the main battery and the other went to a fuse panel i put in on the passenger side (less wires everywhere),Hi ITSA Im'e doing this with my alt. why the two thicker cables from the stud on rear off alt., do they both go too main batt. +
Cheers for that! I still got original for now! Will do the heavier cable to see if i can get some more out of it!Whats a norm voltage too the batt. when cruising? as it is im'e getting around 13.8 at the batt via monitor.in that pic one goes to the main battery and the other went to a fuse panel i put in on the passenger side (less wires everywhere),
as it is the standard alt in mine one wire of that size is enough to reduce voltage drop, with a 120 amp alt i would go a thicker wire or 2 wires to make sure it can carry the full load to the battery when winching
best bet is to take a voltage reading from the rear of the alt , it should be around 14.2-14.4 volts, that is what should be getting to the battery, so to me it looks like you have a .4 to .6 volt drop along your charge wire and i dare say as the load increases so will the volt dropCheers for that! I still got original for now! Will do the heavier cable to see if i can get some more out of it!Whats a norm voltage too the batt. when cruising? as it is im'e getting around 13.8 at the batt via monitor.
i would recommend probly a 20 or 30 amp fuse to be safe, although there is no current flowing through that wire , it just takes a voltage reading so the alt knows how many amps to produce to get the voltage correct at the batteryDoes the new sense wire require an inline fuse????
I disagree that is too high especially when it drops with the lights on to under 14.
Battery's will last longer when charged to the high side than when charged to the low side due to the higher voltage reducing sulfation. Anything under 15V is generally accepted as being OK on a Vehicle.
Slightly higher voltages also reduce amp draw which is beneficial to most DC electrical devices and switches anyway.
There is less than .4 of a volt difference between what you are saying is too high and what is right and given the fluctuating voltages the vehicle will experience in normal use that will be a lot more than that, I would say it is totally irrelevant.
No doubt this measurement was taken with everything turned off and the application of the brake lights, turning the radio up, using the AC and certainly a combination of these things as experienced in normal driving will easily take the edge off the voltage and probably bring it right back to what you think is the safe voltage or lower.
The amount of time things are being used in the vehicle I would imagine would greatly outweigh the amount of time it's sitting there absent a load at all. It is a very good thing to give a battery a topping off now and then so I would be pleased if this were my vehicle and i was getting that voltage.
I'll bet when the thing is stuck in traffic at night with the AC or demister on, the voltage will still be very low so at worst, the slightly higher voltage would bring the battery up quicker and go some way to making sure when it was switched off it wasn't a bit low which is what really knocks battery's off fast.
All that said, If you actually look into battery charging, there are all sorts of theroys and calculations and recommendations and there is no one universally agreed voltage. Even float and cycle end voltages are different.
Anyway, like I said, personally I'd be pleased if my alt was outputting this voltage at low or no load.