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The Z1 Motorsports 300ZX Alternator to Transmission (manual) harness is now available as a plug and play alternative to the high priced OEM replacement.

Due to decades of underhood heat exposure and often leaks in the engine bay, problems are commonly found in this neglected harness; starting issues, erratic or inoperative gauges, reverse lights not working, and charging systems problems have all been found here in our shop on customers cars at one time or another.  
Until now the only option was either patch repairs on harnesses that are already in bad shape, or a new replacement harness that list for over $348.00.  Our harness also features the OEM style rubber boot over the Oil sending unit to keep it dry, clean and free of debris invasive road salts.

Don't let your stubborn, old harness cause you problems any longer.  Freshen up that engine and eliminate future worries or electrical problems.   

Converting your Z from Auto to 5-speed?  Z1 now offers a harness to make Automatic to 5-speed conversions easier than ever; while keeping actual factory style connectors in the harness so it can easily be disconnected in the future if needed (without having to cut hardwired connections).  With this conversion harness you will only have to make 2 cuts and 2 splices to get your reverse lights working, the rest of this harness will be plug and play.  Additional conversion wiring info here

*While this harness is a nice addition it does not account for the work or parts necessary to wire in the clutch interlock for the starter (recommended).  That small part of the conversion will still require a small amount of wiring by your installer, still this harness will save a substantial amount of time with a much more reasonable cost than modifying a new OEM harness.  Additional wiring info can be found here.

Available Options:

Auto to Manual Conversion:

$168.00 $135.00

What our customers say...

Just got the auto to 5spd harness and it looks great. I have worked doing wiring in the past and ...

Rated by Verified Customer Purchase Read More

If you are doing an automatic to manual swap. This is literally the best thing that you can buy for ...

Rated by Verified Customer Purchase Read More

Questions our customers have asked...

Is this harness for the 300ZX Z31 or Z32? I have a 1987 300ZX Z31 and want to do the manual swap and want to know if this harness is what I need.

Response: This harness is for the Z32.

If this gonna work on right hand drive I ordered a original manual and my car is original manual right hand drive thanks

Response: Yes

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