electrical problem

[ballsout]

can anyone help. i have a 90 240sx and my tail lights dont turn on with the switch, also my panel lights dont turn on either. i have checked the fuses and they are fine. one thing that i did find was that in the radio wiring the wire that turns on the tail lights and panel lights was there. is this common or due i have a wiring problem?

[240TKE128]

I will tell you i have a 90 as well and i have the same problem except my lights will never shut off.

i am currently working through the wiring i will let you know if i find anything out.

[ballsout]

sounds good. i also found out the my third brake light stays on once the key is turned to ignition position.

[ironsurfer129]

I would like some help too. I got my car from a friend and he said the taillight/brake don't work anymore. He tried new fuse, and it blew right away. Clearly theres a short, but need to find out where the short is. You guys said theres wire to the stereo for the brake light?

My car has an aftermarket stereo, so I am thinking could it be wire there?

Where else does the wire lead to?

[DemonicSpeedz]

ok there is a ground wire that goes to the radio that is for the tail lights if that comes disconected the lights wont work a ground wont pop fuses only main power feeds unless the ground has been re routed and is causeing an open loop. as for them not shuting off i just went threw this after my led tail light conversion and it was my switch at the pedal, best thing to do is get a volt meter and start testing as for the aftermarket radio the only way it would effect you is if there was no wiring harness used and the idiot that put it in hard wired it in.

[ballsout]

what about in the radio wiring, i have two sets of wires. one is for the tail lights and the other is for the dash lights. how would i fix that i have just tried wiring it together(one dash wire to the other dash,one taillight to the other taillight) but nothing happens. am i supposed to ground both wire sets or?

[DemonicSpeedz]

that is where a volt meter comes in so you can check for continuity.check to see if the switch works, then you check for the power and chase that and at the same time you re ground the ground. clean the surface make sur conector isnt corroded and there is two plugs that go to the radio yes but the radio is just a junction box for them. so you need to know where the break in the line is

heres a suggestion that will help if no volt meter is around. get a fuse and some 14g wire put the wire to the battery and hook up at the power to the dash lights same with tail lights see if they come on if so then you finish installing a new power wire for them if they dont work when you do this put a ground on them and see then so you will know then what needs fixed.

but wiring them together isnt goin to do you much of ne good cause if there is a elec short it will just move on down the line.

[ballsout]

yes thats exactly what i did thats how i found out that they were dash lights and tail lights but how do i fix them to go back to the switch or am i going to have to put seperate switches am i going to have to bust a (mickey mouse)

[ballsout]

i think i might of f%^&ed up. i was using the radio harness power wire to check the wires with out a fuse and now my wire that turns on the radio does not supply power when the key is turned on. this wiring is pissing me off. as help

[DemonicSpeedz]

wiring is a night mare but your on the right track ok, you should be able to rerun the wire to its exact contact points but have you tried replacing your light switch

the mickey mouse effect is for the ones who dont have the patients to figure it out but if you hook up a secondary switch that will be fine to as long as it is ok with you, as for the radio was it the memory wire or the 12v key on wire cause both have fuses one is in line and the other is in the fuse panel if it was the memory that stays on constant then just replace that wire to the battery it is to much of a night mare to unraval all the wires to find that fuse.

if u find urself getting fustrated just take a minute to breath i have been doing driveability problems for the last 15 years and that is what works for me when i want to demo the car.

[ballsout]

its actually the 12v key turn on wire. the other wire i have already routed a wire from the car stereo to the battery. plus when the radio didnt want to work i found that the fuse had been blown. so i replaced it as well.

i havent repalced the switch yet . i should of thought of that.

what should i do about the 12v key wire. i think is might be burned out cause when i was using it i felt the wire hot?

[irishmanpunk]

i have the same problem but i think it's cuz the idiot who had the car before me installed an aftermarket stereo w/o using a harness. know where i can get one? from the plug to the factory stereo connection. also, could this cause the horn to blow constantly? thanks

[ballsout]

same thing with me the guy took the radio off and took the factory radio harness with it . so now i have to hardwire the aftermarket radio. this is why the 12v wire burned out due to my fault with checking the lights. i went to the junk yard and those a$$holes wanted 50 buck for factory wire harness. so hardwire is the only way to go.

check the site out for wiring diagram: http://www.modifiedlife.com/19...agram/

[DemonicSpeedz]

I do beleave that the horn is connected to the radio harness and that is a rip off id hard wire it to if they wanted that much for the plugs unless you were taking the whole thing then that would be different

[ballsout]

i found a differnt guy that gave me the harness for 10 bucks. i just connected the factory radio harness and still the tail lights and the dash light dont work. i think im going to have to just run a wire from the battery to a fuse then to a switch. if anybody finds a solution let me know. i could take it to an electricion but he charges me 200 bucks he must be smokin crack! i hope somebody can find a solution

[ballsout]

have you found anything yet on the electrical issue?

[rps13saipan]

did you figure out how to fix those cluster gauge lights? am having the same problems.if i have some progress ill help you oput.likewise...

[ballsout]

well my problem has been solved i went down the radio harness wire and found out that the wires were crossed so i fixed that issue. but i still have an issue with the dash lights they still dont turn on. but i did find out that if i supply power to a wire on the radio harness the dash lights turn on. but theres got to be another way.

[irishmanpunk]

the

well my problem has been solved i went down the radio harness wire and found out that the wires were crossed so i fixed that issue. but i still have an issue with the dash lights they still dont turn on. but i did find out that if i supply power to a wire on the radio harness the dash lights turn on. but theres got to be another way.

there is a white box behind the kick panel below the fuse block. possibly a blown line on the circut board inside the box. just solder a wire in the blown line (black and burned up) and you're dash lights should work again. worked for me on my 92. now i'm just trying to figure out why my back-up lightls stay on