I need a wiring diagram,some genius cut the neg. battery cable off & ran a piece of speaker wire in its place.now I have no idea what gnds. there were or where they went. this is on a 1999 escort zx2

3 engines sold new (options )none told. so USA generic answers me. 2.0,2.2,24L

most cars, it is super simple the
huge battery cables. 4 ends 4 lugs,
to the battery end I will skip
RED POS cable goes to the starter motor solenoid, huge lug
out-board lug, only, never inboard if seen .
the NEG cable, (minus) must to the the engine block or
to the starter motors huge mounting bolts
and never to the body of car ever. (direct) NEG.
rule #1 connect PLUS cables first.
and NEG last, or risk shorts (dropped or wrenched wrong) and boom eat acid for lunch.
NEG lug is OFF first, ON last. oK> a rule.

other places for NEG lug, below.
are upper part of engine mounts, the engine side always.
this NEG cable is a 500 amp up, cable, so the closer to the starter it is connected the better, no rust. clean and tight connections
pure electrical laws here, ( and more) see sensor.below.

one of these 3 engine, or all has NEG battery cable current sensor
so the NEG cable must be connect correctly for sure.
find the guy that connected it wrong and make them put it back where they found it?
that it.
connected wrong (GND-neg) to body, the body ground jumper burns up.
do avoid that.

do to any electrical work remove neg battery lug first
and not blow up expensive modules.
door locks dead
or door windows
or both.
?
just one door fails?
all flush checked.?
pull battery neg lug then put back the cut wire properly ,soldered and heat shrink tubing used,
then replace all blown fuses,and put back battery neg lug last?
this car uses a GEM module to direct all that, to windows
and you do not want to blow up any GEM, ok?
lets do fuse related.
F8 maxi fuse 30amp in battery junctionbox. boom
f10 same box same amps and same maxi fuse type.
fuse 10 also blows and all door locks dead too.

so when you short out wires things die
checking fuses is always first. or CB circuit breakers, none here CB.
,

boom

If all you are doing is changing to a side post battery, just connect all the positive cables from the old pos post to the new pos holder and all the neg ones to the new neg holder. If you've already cut them all off and not sure where each wire goes, all the reds are positive, all the blacks are neg. To make sure use your continuity meter to test. Connect one meter lead to any good clean metal part on the car and test between each black wire in turn, the neg ones will show a circuit, the pos ones will not.

When you say charging,do you mean amp reading or volt reading?Amps should rise when first started then drop.Volts should stay close to constant.The small wire going to the alternator to power the regulator in the alternator is just switched power.If the volts fall under 14 after ten minutes you may need to try a replacement alternator.

Infiniti QX56 Car Radio Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Yellow
Car Radio Accessory Switched 12v+ Wire: Purple
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red/Blue
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Green/White
Car Stereo Amp Trigger Wire: Green/White
Car Stereo Amplifier Location: To the right of the steering column behind the BCM.
Left Front Speaker Positive Wire (+): Blue/White
Left Front Speaker Negative Wire (-): Blue/Red
Right Front Speaker Positive Wire (+): White/Black
Right Front Speaker Negative Wire (-): Blue/Black
Left Rear Speaker Positive Wire (+): Gray
Left Rear Speaker Negative Wire (-): Black/Yellow
Right Rear Speaker Positive Wire (+): Orange/Blue
Right Rear Speaker Negative Wire (-): Red/Blue

if you have access to a digital multimeter, connect the meter (set to volts) across positive and neg. terminal of the battery, should read roughly 12.6 volts, close to 10 volts, battery may be going out, also test the alt output, disconnect neg term and place negative lead to battery neg post and positive lead to neg battery cable (make sure meter is set to amps) should read near the rating, if both those, then you'd want to do a resistance test, (set meter to Ohms) disconnect battery and connect meter neg to either pos cable terminal or where the pos cable connects to the alt and connect positive lead to opposite of neg, should read next to 0, the check resistance of the ground by connecting meter between batt neg cable and body of alt.

- Spenser

Here are the wire colors and what they do in the system. Please rate my help.

1994 Saturn SL Car Radio Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue

things to consider:
Does it have a factory amplifier?
Is the factory harness still present?
Does it still have the speakers present?

You are going to only have a certain amount of wires... If the factory harness is still there you can simply purchase an aftermarket or just look at one in a local store on what wires are what.

you would have your:
gray and gray w/ black
purple and purple w/ black
green and green w/ black
white and white w/ black
these are normally used as an after market clip on harness for that factory wiring. (left front, right front, left rear, right rear)

Obviously your going to have the constant (yellow), ignition (red) and the ground (Black);
so the others would be either a remote (amp or power antenna) usually white with blue strip and dimmer normally orange for the after market harness, and the others will be the speakers.

What you COULD try is using a 9v battery and picking up the wires that are solid and striped and touching them to the 9v battery.

When you find the two that make that speaker make a popping sound you have found that speaker.
Once you have found the speaker that pops, you should be able to take it out and look at the color of the wires to make sure you will have the pos and neg for each speaker correctly set.

You dont want some speakers being in phase while other are out of phase. if so the sound wont be right.

On new systems, like the one you bought to replace old one: grey and white are front, purple and green are rear. New wires should be labelled or shown on diagram on radio body. Stripes indicate negative side of speaker.

On your old loom: cut back behind plug, and strip wires at ends. Isolate power and grounds, and any that go hot EVER! Now checking just the remaining wires, use a AA or 9-volt battery, and touch pairs of wires to opposite poles of the battery. If you touch two that go to the same speaker, you will hear a slight static sound at that speaker: label these for that speaker, and so on. Once you get the pairs seperated and labelled by speaker location, the negs will be the striped ones, though you may not find they all have stripes. once you pair them, test in both polarity positions, the correct one will sound better right away. Should be able to reach max volume with little buzz or distortion. If not switch pow and neg sides. Hope this helps, TT

Blazer: Orange is hot all the time. Ig+ is purple with white tracer, and one of the green ones. Speakers are paired in blues, greens, and then it gets weird, and makes no sense by color. I just take a 9-volt battery, and lightly touch both poles to two wires I know aren't powers or ground, and when you find two that go to the same speaker, and touch the pos. and neg. of the little battery, you will hear a light static at that speaker. THis will tell exactly which speaker you have found wires for. Black is ground of course. Good luck. I like your idea.