Electrical issues, help needed.

Montanaorbust · Post by **Montanaorbust** » Fri Sep 25, 2009 6:11 am

Well, the battery was dead on a little dump trailer i have. So, the 37 was handy, i took one of the batteries out of the truck, and used it on the trailer for a few minutes last night, i went to put the battery back in. Hooked all (both) cables back up. Nothing no lights, no start, no nothing. While putting the battery back in, one of my grounds hit the battery box and sparked, i didnt think nothing of it, untill i went to start it. Could i have tripped a breaker, blown a fuse or something. The battery hook up seems easy, i wouldnt have thought i did something wrong there. I mean both longs leads, grounds, cables, whatever go on the negative, and then the short jumer from pos. to pos. right. What might i have done. Oh, I checked both batteries after that. Both are good. actually, real good.

HingsingM37 · Post by **HingsingM37** » Fri Sep 25, 2009 9:11 am

If I am reading you right, you hooked up your cross battery jumper wrong. It should jump a postitive to negative post to give you 24VDC. Otherwise you will just get a strong 12VDC

) Then the long hot cable + to the starter, the long negative to engine/ frame ground.

Lifer · Post by **Lifer** » Fri Sep 25, 2009 12:08 pm

OOPS! The jumper goes from positive (+) to negative (-) so that the batteries are connected in series to get 24 volts. The way you have them connected now will ruin them in very short order.

cuz · Post by **cuz** » Fri Sep 25, 2009 4:08 pm

Actually what he did was harmless. The pos to pos connection made the entire system a big Zero. No drain and no power. There was no place for any electrons to flow.

cuz · Post by **cuz** » Fri Sep 25, 2009 4:09 pm

Actually what he did was harmless. The pos to pos connection made the entire system a big Zero. No drain and no power. There was no place for any electrons to flow.

Montanaorbust · Post by **Montanaorbust** » Sat Sep 26, 2009 10:15 am

thanks men, it was a silly mistake, but who has never put a lawn mower blade on upside down? Thanks agian, she's back up and running..

poor rich · Post by **poor rich** » Sun Sep 27, 2009 5:22 pm

OH CRAP! I can put my lawnmower blade on backwards, now I have something new to worry about....LOL
Rich