instrument cluster and high beam issues

[hazeyisrxllin]

ok so today i install my jensen vx7020 headunit in to my 90 300zx twin turbo and after i hook up the battery the headunit works perfectly but if i turn on my headlights on it automaticly turns on the high beam and the instument cluster wont illuminated any ideas before i attack it in the next few days

[Ace2cool]

You probably jumpered to a wrong wire. Try taking the dimmer wire off and see what happens.

[hazeyisrxllin]

dimmer wire as in interior lights wire ? and do you think that will fix it

[Ace2cool]

Yes, the dimmer wire is connected to headlights, so when you turn the headlights on, the head unit dims. If the radio is the only thing you've changed, then the troubleshooting is pretty simple.

[hazeyisrxllin]

Yes the radio is the only change I have done but the previous owners did a Butcher job of installing the aftermarker cassette player that was in in before I bought it I played around with it hell I disconnected the radio and the harness wires and was still gettin the same problem

[Ace2cool]

Double check your fuses and relays. I can't remember which one, but I know I've seen a fuse cause a similar issue. The high beams come on as a "safety" thing or something.

[hazeyisrxllin]

Really I'll look into that tommaro I brought my car into work and I was talkin to the older 15 plus year techs atleast those good with electrical all of em said check my relays n schematics on the car there not familiar with nissan there mopar experts but car speaks car so imma look into it more at least I feel better that I wired my radio perfectly first try

[hazeyisrxllin]

So I've replaced community illumination and tried the relays from my other z32 and I still have the same issue

[Ace2cool]

Do you haev HID's by chance?

[hazeyisrxllin]

No not yet I was planning to get some soon

[Ace2cool]

Ok, Just out of curiosity, you didn't happen to hook the radio back up before you swapped relays, did you?

Also, just verify your wiring against this diagram: http://www.nicoclub.com/archives/wiring ... m-z32.html

Usually I see this happen with the illumination wires. I'm talking 90% of the time. If none of that checks out, there may be a problem with the stalk switch, but seeing as the dash is out, I'm betting you've got a wrong wire shorted somewhere.

[hazeyisrxllin]

No the radio was still connected and working when I switched the relays I have the bose set up with the center speaker and the scamatics look correct the dash will remain out until my double din face plate shows up now I still had the same problem happend when I disconnected the radio completely and if I'm to use just one illumination wire which do I use

[hazeyisrxllin]

As much as I don't want to I'm about to jus have nissan fix it smh

[Turbonyg]

So has this been resolved?

I have an 89 fairlady z32 and driving down a semi bumpy back road this morning, I lost all my cluster and exterior running lights. High beams defaulted to on and signals all continue to work.

I do not have a stereo in the car. Car was gutted when I got it about 2 weeks ago. Driven down this road four times now and this is the first issue. Help would be great. Driving it to work in the morning.

Thanks

[hazeyisrxllin]

No I have not solved the issue nissan suggest I install a new harness

[Turbonyg]

Of course they suggest that. They get paid by the hour.

I just need help on where I should look into this issue. Fuses were
Fine. Gotta check relays tomorrow before I drive it to work but the car has been gutted. I have sensors etc just laying in the hatch area. No stereo, just a hole in the dash...

Any other suggestions besides buy a new harness?

[hazeyisrxllin]

Well as for my issue I swapped all the relays from my na z32 I changed the pod with light switch on it I changed the turn signal stalk n I messed with fuses only thing I haven't done is probed my harness

[Turbonyg]

Fixed my lights and cluster issue tonight. It turned out to be a 20amp fuse below the steering wheel up against the side of the firewall. It looked good and continuity checked good but it was still fried.
Swapped it out and all my lights worked.
1989 300zx tt rhd

Thanks for all your help.

[hazeyisrxllin]

Which fuse is it

[Turbonyg]

Mine was a yellow 20amp atc fuse. Top row of three rows, second from the back of 5 fuses.
Gave me cluster illumination and all my running lights again. I would have to find a fuse block diagram to tell you what it's actually supposed to do.

[hazeyisrxllin]

So the second yellow 20a fuse fixed it

[Turbonyg]

I'll take a photo tomorrow to show you which one.

[hazeyisrxllin]

Ok cool