Installing keyless entry on 1991 240sx

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

I have power door locks but you have to use the manual lever to activate them . There is no separate button. Will i need to get a special module to get after market keyless entry systems to work? Thanks.

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

The locks r vacum controlled you will need to get 1 door actuator from Best Buy or any car audio shop. The reason you need 1 is you hook it up to the driver door lock so when it locks or unlocks itl do the same on the passenger side. If u need the wiring scematic PM me im a car audio installer

Post by **Simmsled** » Thu Oct 30, 2003 1:34 am

Ditto that.

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

ok, thanks. Are there any motors on any of the locks right now?An actuator is just a relay , right? someone said I only had a motor on the passenger side.

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

yes u already have a motor there. Thats why u only need to get an actuator for the driver door

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

Thanks:) Nice to talk to someone who knows their stuff.

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

PM'g seems to be disabled. Would someone please email me a schematic for the door locks on 1991 240sx. Thank you:)

[email protected]

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

Wiring Sent

Post by **A_Rivers** » Thu Oct 30, 2003 1:34 am

vancouverbc wrote:Thanks:) Nice to talk to someone who knows their stuff.

Indeed, it's always nice to find someone who knows what there talking about and not just blowing smoke. Do you work in the Mobile Electronics field Boro240 ?

Post by **scuba_sean** » Thu Oct 30, 2003 1:34 am

i dont know about a 91' but on my 90' all i ad to do was find the two wires coming away from the door lock module in the drivers door. theyre ground activated. so one pulses lock when it gets grounded, and the other pulses unlock

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

There are two large green wires(one with black stripe) that go to door lock which mitchel's wiring diagram show coming from door lock timer. I assume they power the door lock. I took a pic of a brown connector that I don't really understand. An orange/black and a black wire go in and a red and a black wire go out. I assume the black and red wires are going to the door lock motor. If I disconnect brown connector , doors lock or unlock by themselves.Brown connector is found in door kick panel next to door lock motor. The Mitchel diagram only shows the orange/black wire going from door lock timer to switch than ground. I'm guessing that the switch is on the motor and is actuated when the door lever is moved manually. I don't know what vacuum actuation is. I think everything is controlled by door lock timer.

I bought a bulldog keyless entry which has one wire for lock and another for unlock, while the 240sx has one wire which locks and unlocks. Bulldog suggests i need one of their relays and a 3 amp diode to get things to work. I don't see why the bulldog module can't just pulse the 240sx door timer via the orange/black wire. Don't see why I need a relay for small control wires.

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

An actuator is less stress it fits behind the panel no need to interface anything

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

I assume an actuator is a motor/solenoid so there would be two motors in the driver door panel. The second motor would physically actuate the existing motor and interface with the bulldog module easier.

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

oh and yea im a certified MECP in Best Buy 2 1/2 yrs

Post by **SkidMark240sx** » Thu Oct 30, 2003 1:34 am

Would you happen to have a wiring scematic for a 1990 240sx with power everything? I just bought an alarm with keyless entry. [email protected] Thanks!!

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

This was in the faq under 1991.

Wiring Color Codes And Locations For: 1990 Nissan 240SX

Constant +12V WhiteIgnition +12V Black/Red Starter +12V Black/White

Dome Lights Red/White (-) At Drivers Door Pin Swich Or At Dome LightTrunk Pin Switch Red (-) At Trunk Light Or SwitchParking Lights Red/Blue (+) At Light Switch

Power Lock Orange/Black* Drivers Kick PanelUnlock Orange/Blue*

OEM Horn Green/White Steering Column

* 3-Wire Negative Door Locks

Name: Mike LiberatoreEmail: [email protected]

Post by **SkidMark240sx** » Thu Oct 30, 2003 1:34 am

thanks

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

| ITEM | WIRE COLOR |POL| WIRE LOCATION || 12V|white |+ |ignition harness || STARTER|black/white |+ |ignition harness || SECOND STARTER|black/yellow |+ |ignition harness || IGNITION|black/red |+ |ignition harness || ACCESSORY|blue |+ |ignition harness || POWER LOCK|orange/black *1 |F |driver's kick panel || POWER UNLOCK|same wire *1 |F | || PARKING LIGHTS +|red/blue | |back of dash dimmer || HEADLIGHTS|grn/yel, grn/blue |+ |steering column || DOOR TRIGGER|red/white |- |courtesy light || TRUNK/HATCH PIN|red |- |sw. or light in trunk || TACHOMETER|yellow/red | |ECM pass. kick panel || BRAKE WIRE|red/green |+ |brake pedal switch || HORN TRIGGER|green/white |- |steering column || WIPERS|lt. green/red |- |steering column || LF WINDOW UP/DN|green, blue |A |driver's door switch || RF WINDOW UP/DN|red/white, red/black|A |dr. door or kick panel || RADIO 12V|red/black |+ |radio || RADIO GROUND| | | || RADIO SWITCH|blue |+ |radio || RADIO ILLUMINATE|red/blue |+ |radio || POWER ANTENNA|black/red |+ |radio || LF SPEAKER|brn/wht - brown | |radio || RF SPEAKER|blu/wht - blu/yel | |radio || LR SPEAKER|blue - pink | |radio || RR SPEAKER|red - green | |radio |

Notes:*1 This is one of the three known systems Nissan used in early production. To operate, open(cut) the org/blk wire and the doors will lock, pulse the same wire to ground and the doors unlock. The other two systems are negative pulse (orange/black for lock and orange/blue for unlock both at the door lock timer in the passenger kick behind the ecm.) and non-centralized - add actuator in drivers door.

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

this is the techsoft on the 90 240sx

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

Is the right relay. Only one at princess auto i could find. i know i need a singe pole double throw because i need a normally closed connection.

8057103 RELAY$ 0.9900" Omron style " 5-pin configuration " Model#12177233 8057103 Wt. 0.1 lbs. REG. 3.99 SALE 99¢

Post by **boro240sx** » Thu Oct 30, 2003 1:34 am

yea thatl work

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

Thanks. I'm going to try to do the lights, disable start, and hatch.

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

I finally found a diode. Instructions just say find a positive power line that is always on using test light. Do I just arbitrarly choose a hot wire and splice into it?

Post by **vancouverbc** » Thu Oct 30, 2003 1:34 am

i touched two wires together and blew up the module. it wasn't the power lines so i didn't think it would hurt. i didn't understand why the bulldog module required two 12 v lines going into the module. and i assume i needed another 12v line for the relay to operate. bulldog sure was not helpful.

Post by **sr20det** » Thu Oct 30, 2003 1:34 am

Would someone please email me a schematic for the door locks on 1991 240sx. Thank you

[email protected]

Post by **sr20det** » Thu Oct 30, 2003 1:34 am

Would someone please email me a schematic for the door locks on 1989 240sx. Thank you

[email protected]

Post by **shawawini** » Thu Oct 30, 2003 1:34 am

Maybee this is a stupid question, but i want to get a rather certain answer before i start tapping into wires. If i have the two wire locking system for my 89 240sx, and my alarm system provides a seperate lock and unlock wire, could i simply tap the lock wire from the alarm into the orange/black wire and the unlock wire to the orange/blue wire, and then where should i tap into the wire, is it done above the harness that conncets the wires that run on the floor to the ones that go into the door?

Post by **shawawini** » Thu Oct 30, 2003 1:34 am

bump :help

Post by **dBDevil** » Thu Oct 30, 2003 1:34 am

Boro.....dude....Vacuum locks in a Nissan....I'm sorry to say that some should recheck your MECP answer sheet. His 240 has what's correctly called "power assisted" locks. Yes, an actuator is necessary. Vacuum locks only occur in european cars, specifically older Mercedes and BMW's.

Installing keyless entry on 1991 240sx

Installing keyless entry on 1991 240sx

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