Wait Light will not go off

[juanprado]

Searched but could not find this.......

All was good till the last cold spell, well cold to me, comfortable to the the majority here I suspect Truck had normal wait light cycle but would not start due to batteries slightly low. Charged batteries and they are good. Truck now very difficult to start and wait light does not go off. Alternator has good voltage in green and batteries/charging system good.

I suspect my box bit the dust when I charged through slave port with 24v charger with all cables connected......

Has any one else had a light stay on and not go off?

M998 , 6.2L with yellow box.

 

[Stevev]

Searched but could not find this.......

All was good till the last cold spell, well cold to me, comfortable to the the majority here I suspect Truck had normal wait light cycle but would not start due to batteries slightly low. Charged batteries and they are good. Truck now very difficult to start and wait light does not go off. Alternator has good voltage in green and batteries/charging system good.

I suspect my box bit the dust when I charged through slave port with 24v charger with all cables connected......

Has any one else had a light stay on and not go off?

M998 , 6.2L with yellow box.

 

[Stevev]

yup
that's what it sounds like
I would add a cut off switch to the battery cable so you can disconnect when charging

 

[86humv]

I charge all the time thru slave port...no problems.

 

[riderdan]

I'd be surprised if the slave-port charging was the problem. My truck has been charged literally hundreds of time through the slave port with no ill effects. Indeed, the slave port is meant to jumpstart the truck, so it shouldn't be a problem--by design.

That said, it does sound like your box is probably fried.