claygrassmann

okay so i went to wire up my new kc lights and i got them to light up so i turned them off, i go to move the jeep and after moved turn on the switch and the green light on the switch lights up for a second and then dies and the radio dies, i figure fuse check the fuse in both the radio and lights and both are good so unplug lights completely and radio dont turn on, unplug radio and lights dont turn on, grab the multi meter start checkin fuses under the hood, no power but jeep is running, shut of jeep starts right up, battery is reading 14.1V checked the cabe from batt to fuse box, has power but no power to fuses, check fuses under dash no power. shut off jeep go to lock it from the switch on the door and no power. headlights work reverse lights work dash lights work fan works everything is workin other than my radio lights and power lock switch but nothing is testing good for power.

sorry for the novel but it usually helps to tell everything, also 93 4.0 auto

claygrassmann

also think it might be the alternator because it has its moments of hard to start

storm101

How did you wire in the lights? Direct from battery or did you tie into something?

claygrassmann

i got my power from an open spot on the fuse block under the dash, tomorrow im plannin on makin a jumper wire straight to the battery for the lights to figure out if the lights even work at all now

storm101

My first guess would be the feed wire to the block burnt out. Possibly a fusible link or something.

Ill have to dig through some wiring diagrams in a bit...

Any specifics on this open spot in the fuse panel? Any of that would help when i get a few to look some stuff up.

claygrassmann

its one of the single blade recepticles at the top of the block labeled batt

storm101

Ive been looking through diagrams, and I cant find anything as of yet on the actual fuse boxes.....

Again though, from the description youre giving, the initial things I would check are

A. Swap the fuses with known good fuses. Never hurts to check and recheck.

B. How is that fuse box fed and is the feed wire alright is there a fusible link in it that blew due to excessive amperage draw? Dont forget the grounds on the stuff either, grounds are 50% of the electrical circuit. Power loss can happen on hot or ground.

C. Did anything on the fuse box itself melt away (again would leave an open non working circuit)? Are the systems youre having issues with close to that open spot you tapped into? Could have melted a common point.

Do some inspecting, Ill keep looking through the stuff I have available. That is where I would start though with the info you posted.

Oh and as a tip...a general rule I usually follow with wiring lights are always use relays, and always run off the battery instead of open spots or any other possibly unreliable source for aftermarket add-ons.

Good luck and keep it posted, Ill keep researching as previously stated!

claygrassmann

looked at jeep this mornin swapped batterys still reading 0V on the multi meter when i test all fuses under hood, but when testing the feed wire to that fuse box it reads 14V. pluged power wire into fuse box on the No. 3 slot and the lights come on, but still no power to radio or power door locks but everything else works including lights, hopefully after work pull alternator and have it tested or just replace it all together with the extra i have. dont kno about wiring much all help appreciated

no fusible link that i could see it all just looked like straight wire to me but then again im pretty bad when it comes to wiring

nothing on the box melted that i can tell

storm101

I doubt its the alternator. Battery should read around 12.6 when the jeep is not running, if you fire it up the reading on the battery should be in the area of 13.7-14.3 ish. Thats a general range for the alternator, and you could probably rule it out just by doing that.

A bad alternator would cause ALL sorts of electrical issues, either way it was going, overcharging, or undercharging. Mainly you would notice that with your battery being randomly dead for an undercharge, or fuses and stuff blowing at random, or lights burning out for no reason, wipers moving at light speed ect... on an overcharge. The overcharge condition would cause weird stuff, but the issues seem to be from where you took power on these lights.

How exactly are you checking fuses..? I like to do that with a self powered test light. Easy enough to see a light come on lol.

Also forgot to ask, what wattage are the bulbs in them lights? The higher the wattage the more amperage draw, the more amperage draw the easier it is to burn stuff up.

With that last post you said you took a power wire, and hooked it into the fuse box somewhere right? If you did that and the lights came back on.....

What happens if you take that power wire off, and connect everything as you initially did? Still no lights, locks, or radio?

If you did that, and got something to work, I would keep poking around in that area, I still feel its something of the sort I had first said.

Its really hard to help diagnose these things without looking at them. That jumper wire could become a good test tool for you though if you connect it to the other systems (that dont work) from that fuse box.

Ill keep looking around as I find time today. I think the issue still lies in the feed side of that fuse box.

Oh yeah and if you found the feed wire, do a continuity check on it. That will FOR SURE tell you if the wire is alright or not.

claygrassmann

the bulbs are 100w ive been testing the fuses with a multi meter, when testing the feed wire for the fuse box under the hood it gets 14V but when i test the fuses it reads nothing, i dont understand how thats possible and the jeep still run fine, power locks i can live with out so im gonna try not to worry about that too much, when i hook the lights up to original configuration locks radio and lights dont work but now hooked to that other source on the box lights work but radio and locks dont, im gonna check on the ground for the radio again and see what that does for me, also gonna pull lower dash panels and see if i can find any crazy wiring from the DAPO

claygrassmann

thanks to blue with the fsm link, got the fuse panel diagram and am gonna replace all fuses with new ones and relays that are related to issues described above and see what happens

storm101

good deal keep it posted

TrekkerJmm

Hi Jon, I would most definitely run the wires straight to battery with in line fuses just to be safe...Tj

claygrassmann

okay so i ran thru the wiring on the radio and as it turns out the power source from the batt wasnt feeding thru the plug, so cut the hot wire ran some jumpers as soon as i hit a hot source the radio came on, so wire the power for the radio from the batt and radio comes on, but i dont think the interior lights or the e fan is workin, i turned on the AC and the fan didnt come on, oh power locks still not workin but havent tried swappin the relays under the dash yet but KC lights work and so does radio so a few more gremlins to find but i think im gettin there, any more tips?

claygrassmann

okay update jeep been runnin for a while and just heard the e fan kick on so thats workin fine now just the interior lights and the power lock