91 Q45 Stereo Diagram

['91_Q_45]

I just recently bought a 91 Q45. The car still has the factory stereo in it but i think it has aftermarket speakers (Distorted sound). I want to install an aftermarket stereo, but i can't find the wiring diagram for the stock stereo, anywhere. Does anyone know where i can find it?

[elwesso]

you can find one in this thread......

[elwesso]

Ask and ye shall recieve... Print tihs out and put the two pages side by side.. The diagram covers 2 pages...

[elwesso]

Sorry for the triple post, but welcome to NICO! Love to hear more about your Q...

If you have crackly sound, it could be because your amps are bad. There is a recall on the 91 models for something goofy, take to dealer and they will replace due to the recall..... Someone should be able to give you details, or better yet search! Search for something like 91 Q45 amp, bose amps, or something like that... Im nearly certain that any dealer must honor the warranty, as they send them back to bose.... And you get fresh amps free!!

Alos, that diagram is for a 94 Q45, but I think they are similar enough that it will help you out enough...

['91_Q_45]

91 Grey Purchased for a mere $1,500

192,xxx on the odometer

39,xxx on the motor (according to the previous owner it had a motor swap. He said he had paperwork to prove it, but i forgot to get it .)

Rack and pinion are shot to hell! I Will be replacing them as soon as i get the money.

Power steering pump leaks

Now for the stereo First the stereo had aftermarket speakers installed (Infinity), so would the warranty or re-call be void? The attachement you sent would not work. I just tracked the wirs to the speaker. Hooked up the front speakers only. Rear were taken out before i bought it.

What are the known problems for this year of the Q? I have heard of transmission problems past 100,000 miles. What else is their out their?

Where is a good place to look for parts for the Q?

Sorry for the long post

[Q45tech]

"Purchased for a mere $1,500 "

Because it will cost $5,000-$9,000 at retail to restore it close to fully functioning as new, not counting external cosmetic or seats/steering wheel.

However with a combination of do it yourself, hours/months of study, trained aftermarket technicans, and discount INET parts you can probably reduce the cost by 25%-40%.

Really depends on your personal standards. Since you never drove one brand new, the same as 99% of current owners [90-93] in US. It is hard to tell how bad it really does drive, brake, handle, ride........cool in summer, or visualize [pitted headlight lens and windshield].

You'll find almost ever possible repair on this site.

A 14 year old [192,000 mile] car will have lots of wear and tear issues..........the main question is the quality of the replacement engine [where it came from as no owner would pay the full price of a new engine ~~ +$12,000] and how much prep work was done on it.

How many miles on the current replaced transmission, the drive shaft.

Seriously doubt the previous owners spent $22,000 [plus engine swap] on maintenance and repairs in the previous 14 years.

Once you get it right, the cost is roughly 15 cents per mile thereafter, compared to a Honda Civic which cost 6-7 cents per mile to maintain to standard. Gasoline is currently approaching 13-14 cents per mile in some States.

Cars are sold because the owner gets a $3,000-$5,000 estimate.

Just so you know the facts.Only 3 technicans [out of 72] I know in 9 dealerships in GA and Florida drive 90-93 Q45 even though they could do the labor free [spare time/after work in dealershop] and purchase parts for half price at dealers cost...........these guys all make $52,000+ per year.

[Jesda]

New motor... I wonder if timing chain guides were updated?

Transmission requires proper care: Mobil 1 or Redline ATF, annual flush, transmission cooler.

The recall covers the rear amps, but I suspect there may be an issue of the original speakers are missing.

When you say its disorted, are you referring to equalization and sound quality or crackling and hissing?

You have your work cut out for you, but you paid a fair price. Enjoy the ride.

-Jesda

[elwesso]

Honestly I wouldnt bother with the bose if its that bad.. 94 bose is GOLDEN, as Ive got a perfect one.. So much better than my old Q, this has been rebuilt and its very nice.....

However if its that bad, just get something aftermarket.....

Like Jesda said, you got your work cut out for you... Please read previous posts on INJECTORS, TRANSMISSION, CHAIN GUIDES, KNOCK SENSORS, STEERING RACK, FLUID, MAINTENACE.... Alos, all posts by Q45tech......

['91_Q_45]

"Purchased for a mere $1,500 "

Because it will cost $5,000-$9,000 at retail to restore it close to fully functioning as new, not counting external cosmetic or seats/steering wheel.

However with a combination of do it yourself, hours/months of study, trained aftermarket technicans, and discount INET parts you can probably reduce the cost by 25%-40%.

Really depends on your personal standards. Since you never drove one brand new, the same as 99% of current owners [90-93] in US. It is hard to tell how bad it really does drive, brake, handle, ride........cool in summer, or visualize [pitted headlight lens and windshield].

You'll find almost ever possible repair on this site.

A 14 year old [192,000 mile] car will have lots of wear and tear issues..........the main question is the quality of the replacement engine [where it came from as no owner would pay the full price of a new engine ~~ +$12,000] and how much prep work was done on it.

How many miles on the current replaced transmission, the drive shaft.

Seriously doubt the previous owners spent $22,000 [plus engine swap] on maintenance and repairs in the previous 14 years.

Once you get it right, the cost is roughly 15 cents per mile thereafter, compared to a Honda Civic which cost 6-7 cents per mile to maintain to standard. Gasoline is currently approaching 13-14 cents per mile in some States.

Cars are sold because the owner gets a $3,000-$5,000 estimate.

Just so you know the facts. Only 3 technicans [out of 72] I know in 9 dealerships in GA and Florida drive 90-93 Q45 even though they could do the labor free [spare time/after work in dealershop] and purchase parts for half price at dealers cost...........these guys all make $52,000+ per year.

First off, im am not at all trying to "restore it close to fully functioning as new" All im trying to do is make it a reliable daily driver, until I can afford a brand new car. I'll admit that i have my work cut out for me, and the overall drive of the car is far from new car standards.

What does "3 out of 72 techs", have to do with anything? I personaly don't care what every other person drives. I joined this site b/c i thought i could get some helpful advice from other Infiniti owners.

Now back to the original post. Can you try to post the wiring diagram for th 91 Q45?Thanks.....

[szh]

First off, im am not at all trying to "restore it close to fully functioning as new" All im trying to do is make it a reliable daily driver, until I can afford a brand new car.

Ah, but that is the exact point that Dennis is making! Once you do restore it to fully functioning as new, you will be greatly impressed by its real performance and awesome "all-roundedness" and will not bother with getting another brand new car.

Unless it is another Infiniti with the same pedigree (the reason I now have an M45)!

Welcome to the forum - regardless!

Z

[maxnix]

Ah, but that is the exact point that Dennis is making! Once you do restore it to fully functioning as new, you will be greatly impressed by its real performance and awesome "all-roundedness" and will not bother with getting another brand new car.

Unless it is another Infiniti with the same pedigree (the reason I now have an M45)!

Welcome to the forum - regardless!

Z

I think the other point of Q45tech's post is that as a complete operating system, if you let one part of it become dysfunctional, it will compromise the longevity and performance of the functioning components.

Wes' admonition to read all of Q45tech's posts is so you will have a an idea of what you are into. Q45s restored to as-new OEM operating standards are pretty inexpensive to maintain for a large, heavy luxury-performance import. Once they are abused, then the repairs become very expensive very quickly. I'll drop you a PM when I get to town. All of mine are pretty near as new since they are well maintained and all under 62K.

Happy reading.

[PoorManQ45]

Back to the original post.

When/if you install an aftermarket HU, are you going to use the Bose amps(if they're good, of course), or are you going to bypass them?

If you are going to be removing the Bose equipment, I do not understand why you wanted a wiring diagram. All you are going to have to do is:

Remove Bose crap, I mean stuff .

Buy install kit that allows you to use a 1 DIN HU in double DIN space.

Buy HU

If you would like to keep the functionallity of the antenna, you are going to need an adapter. Someone on here should be able to direct you to a making of one.

Remove center dash/console cover

Run power wire from an ignition switched source, or run it straight from the battery if you'd like it to operate after the key is out.

Run negative wire directly from battery to HU.

Ground HU to frame, or a ground wire in the area.

Remove front door panels

Remove rear deck. The back seat must be removed to remove the rear deck. Do not try to remove the black metal covers.

Run wire from HU to the doors and to the rear deck

If you are going to be installing an external amplifier later on, it would be wise to run your RCA cables now.

Install new speakers in the "pods" in the door. Some modification may be needed.

Install new speakers in rear deck.

Wire everything properly.

Turn key to accesory position, check to make sure that everything works properly. If it does, continue onto the next stage. If it doesn't, go back and check all connections.

Reinstall all panels that were removed.

Turn car on and enjoy the newly found quality that your aftermaket system should provide.

['91_Q_45]

Back to the original post.

When/if you install an aftermarket HU, are you going to use the Bose amps(if they're good, of course), or are you going to bypass them?

If you are going to be removing the Bose equipment, I do not understand why you wanted a wiring diagram. All you are going to have to do is:

Remove Bose crap, I mean stuff .

Buy install kit that allows you to use a 1 DIN HU in double DIN space.

Buy HU

If you would like to keep the functionallity of the antenna, you are going to need an adapter. Someone on here should be able to direct you to a making of one.

Remove center dash/console cover

Run power wire from an ignition switched source, or run it straight from the battery if you'd like it to operate after the key is out.

Run negative wire directly from battery to HU.

Ground HU to frame, or a ground wire in the area.

Remove front door panels

Remove rear deck. The back seat must be removed to remove the rear deck. Do not try to remove the black metal covers.

Run wire from HU to the doors and to the rear deck

If you are going to be installing an external amplifier later on, it would be wise to run your RCA cables now.

Install new speakers in the "pods" in the door. Some modification may be needed.

Install new speakers in rear deck.

Wire everything properly.

Turn key to accesory position, check to make sure that everything works properly. If it does, continue onto the next stage. If it doesn't, go back and check all connections.

Reinstall all panels that were removed.

Turn car on and enjoy the newly found quality that your aftermaket system should provide.

Im installing an aftermarket stereo(splicing, no money for harness), so i need to know what wires perform what function(I already got the power hooked up, and the door speakers. I need to hook up the memory, antenna Ect.....). The door speakers are already installed and the wires are re-routed. The rear speakers are gone.