Re: Electric fan question
I replaced the battery with a Red Top Optima. I killed the first Optima and had it replaced with an identical one from a different plant. Interstate Battery called me back a few days later and said the battery tested fine and held a charge under load. They suggested I check my vehicle for a short.
I checked the jeep for a current draw on the battery as best I knew how. Multimeter inline between the - battery post and several good grounds. No current draw. I've had the alternator tested several times, it tests fine, and the local auto shop could not find the short either.
The only thing odd with my electrical system, other than the short, is the lack of power at the fuse box for some terminals. The terminals that are ign. key dependent do not carry power under load. If I check them with the multimeter they read 12 volts. When I tried to use them for my KC's, they would not supply the juice. I tried every switched terminal on the OEM fuse Box and they all reacted the same way. They read 12 volts without load but would not power anything under load. The rest of the fuse box is fine. I am wondering if there is a short between the battery, or the ignition key, and the fuse box. Maybe a short on the feed line for the ign. switched dependant terminals. What do ya'll think.