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Check back regularly to learn what we've been up to at Datsun 240Z Upgrades.

I'll be Updating Images and Info on a weekly basis.


If you have an idea for the 240Z's bad electrical issues, please feel free to share and lets see what we can do together, to make these Classics as fun and worry free to drive as they used to be.

Expanded website

Find out what sort of projects we have underway at Datsun 240Z Upgrades. If you can't locate what you're looking for on our website, don't hesitate to write!

Now taking Orders for the DZ-Start Keyless Push-Button Ignition Kit


This is a Plug and play unit, no cutting or hurting the stock dash harness. connect 3 wires, plug in the ignition connector to the relay pack, mount the push button switch and you're done.

DZ-Start keyless Ign. Kit is $260 ( U.S. Shipping included in price)
Remote security option with 2 key Fobs (add $25)
RFID Passive Keyless Entry kit and 1) Fob (add $40)


Your order will ship within a few days of ordering because they are built one at a time.

Boards need to be made, loaded and soldered. Boxes are machined, IC's are ordered, programmed and installed, wires are cut, crimped or soldered and installed. Everything is done by hand, by me. I have to deal with 9 different distributors and shipping.


Please use the Contact Form to ask for more details, or to order yours today. 


At the moment, I only have plans to do a run of 100. So get in on this today. They may never be available again.  


280Z Replacement Ignition Relay (8/75 to 5/80)

280Z Ignition/Accessory Relay 8/76 to 5/80 $50 shipped

This is the hard to find replacement Ignition/Accessory Relay pack for the 8/75 to 5/80 280Z & ZX. This relay is located in the upper right corner on the passenger side of the car, to the right of the glovebox.

They go bad from age, moisture and use. Leaky windshields can drip water onto the old upside down relay and they rust, short out and fill with water, causing the enivitable failure. Failure is normally noticed when the Accessory side of the fusebox goes dead. When mounting the new relay pack, I don't suggest you mount it upside down like the factory did. The metal tabs are removable so you can mount the relay the way you want, using either tab. Use a small flathead screwdriver to release the tab holding the metal mount onto the relay.


The stock relay is metal and the needed ground to operate the relays IS the case, when bolted to the relay frame. This new relay pack has a ground wire that MUST be bolted to the metal of the car using the same mounting screw that the relay pack is mounted with.

As far as I know and can tell, the OEM relay (25230-89958) is NLA or No longer available. Even the PN-"B5230-W0500" is hard to come by. 

A look into a bad ignition relay. Good time to replace it....

260Z / 280Z LED Map Light plates *NEW*

260Z/280Z LED Map Light $25

Introducing the new LED map Light for the S30 that replaces the standard bulb in the "Flip Down Style" Map Light housing on the 260Z and 280Z's. It has 9 High Flux Super Bright LED's on a flat plate that sits inside the Flip Down Map Light assembly.


This style Maximizes the amount of light you can get out of your map light, for easier viewing inside the S30's seating area.


The Kit comes with the 9 LED plate, correct blade style bulb adaptor with 2-pin connector. It also comes with the instructions for an easy step by step install. The pictures below show the Before and after the LED Plate.


These are WAY brighter and have more of a "Flood" pattern than any other LED bulbs sold by other websites. The LED bulb inserts from other sellers are simple but not nearly as bright and hardly worth the price they charge, versus my products.