[jim_snyder]

I have an 1987 332. It has a charging problem. I checked the AC voltage at the alternator and got like 38 Volts. I did not have a battery light at the dash. I replaced the voltage regulater and the dash light came on. I checked the voltage at the battery running full throttle and I get like 18 volts. Will the dash light go back out when the battery reaches 13.5 volts??

 

[ddogg]

Jim,
Ar you certain you hooked the regulator up properly? 18 volts DC output is insanely high unless you're running open (without the battery connected).

What is the charge state of your battery? Nearly dead, or nearly fully charged?

 

[coalminer16]

That is REALLY high voltage. What is the green sensing wire voltage? That is what tells the regulator what to send to the battery and since it runs through a lot of the tractor it often is lower then the actual battery voltage. Test that and the battery volts (battery when not running-should be 12.6 volts). A relay kit often will cure the green wire issue if not close enough to the battery volts.

 

[jim_snyder]

Travis, Thanks. What would be the kit number and where does it go??

 

[jim_snyder]

Okay guys I rechecked things. Battery voltage before starting was 12.5 volts,charging 15.5 volts @ WOT, green wire had 15.2 volts, and red wire had 15.3 volts. I know it's over charging, will the battery light come on with an over charge condition as well as a under charge condition??

 

[coalminer16]

I can't answer the battery light question but the green sensing wire should be in the 11-12 range. If there is bad contacts it can get lower and that would be the need for the relay. The relay kit is the 318/420 starter improvement kit and you can use any similar relay kit FYI. I haven't installed/bought one. But have heard of the uses for them.

 

[chuckv]

Jim,

Here is the overcharge relay wiring to fix any sensing errors at the green wire:

Its purpose when connected as above is to give the voltage sense pin on the regulator a "true" indication of the battery voltage. If it gets a lower value due to voltage drops in the key switch, wiring and connectors in the stock wiring, it will over charge the battery. Yes, this modification can use the same "cube" relay that is also in the starter improvement kit...

The charge light on the dash only indicates if the alternator is putting out a low number of amps...not an over-voltage or under-voltage condition at the battery itself.
The function of the charging circuit is to keep the
battery properly charged by supplying approximately
13.5—15.0 VDC to the battery while the engine is
operating.
The alternator (G2) produces a high (AC) output
current at high engine rpm. This output current is
controlled by voltage regulator/rectifier (N1), which is
mounted separately from alternator. Battery discharge
lamp (P3) warns the operator when alternator output
is low. The battery discharge lamp DOES NOT
monitor battery state of charge.

Chuck

 

[jim_snyder]

Thanks for the help guys. Going to get the relay kit. Not real clear on how to install so I may be asking for more help.

 

[jim_snyder]

did some more checking and just wanted some input. This is how I have the voltage regulater hooked up.B+ red wire battery,AC terminals wires from alternator,L green wire and ignition brown wire or mine was yellow. Assuming this is correct for test purposes I used a jumper wire from terminal L to yellow side of F2 to see if there is a problem in the harness. The battery light still on and charging 15.5. I have cleaned the motor ground on the frome and engine. The regulater is new. Any other ideas??

 

[doug_cartwright]

Is the alternator plug melted at all? I recently found that if this happens,the two spade connectors inside it can touch causing the light to come on.

 

[iiistix]

is the regulator, aftermarket or oem? I bought an aftermarket regulator and my battery light stays on (flickers) all the time. If I turn on the headlights and pto the battery light will go out. I think the aftermarket regulators don't 'ground' very well and that causes the battery light to flicker/stay on.

 

[jim_snyder]

I did alot of chasing wires and cleaning up grounds. I paid the big bucks for a Deere regulater and still had issues. Took it to a expert and he spent many hours on it. Found the sensing wire and ignition wire was in the wrong place in the plug.