Metric Plug and Play S54 and S62 Wiring Adapter Harnesses from Harvey Racing

[Andrew325is]

*Updated 9 July 2025* Order books have re-opened! :)

Hello! My metric plug and play wiring adapter harnesses for S54 and S62 are available! Contact Andrew at harveyracingsales@gmail.com to place an order until I have the website back up (www.harvey-racing.com). Some harnesses in the common figurations are available for immediate shipment. No more lead times! Limited custom orders with a short lead time are also available. I've kept pricing the same for now even though my costs have increased. Prices are $575 for the standard harness and $725 with 20-pin diagnostic port. The 20-pin diagnostic port allows service reset and communication with body control modules.

Adapter harnesses are planned for the following configurations:
-S54 for E30 (with and without 20-pin diagnostic port)
-S54 for E36 CANbus version (OBD1/Euro and OBD2, with and without 20-pin diagnostic port)
-S62 for E30 (with and without 20-pin diagnostic port)
-S62 for E36 CANbus version (OBD1/Euro and OBD2, with and without 20-pin diagnostic port)

I will make a limited number of others such as S62 for E31 and M54 for E30 & E36.

Features for S54 & S62 adapter harnesses:
-OEM metric wire that matches the factory wiring on your BMW
-Electronic accelerator pedal connector
-Coolant temperature sensor connector (for instrument cluster gauge) (except S62 for E36 & E31)
-Fuel pump relay wiring
-Switch for sport mode (may be omitted on request)
-OBD2 port for diagnostics (excluding OBD2 cars that already have an OBD2 port)
-Power for ABS from DME relay (1990+ E30s)
-Splashproof fuse holders
-Power adapter cable for B+ junction
-Labeled connectors and detailed instructions
-Optional configuration: 20-pin diagnostic port for communication with body control modules (ABS, instrument cluster, etc).

Examples of the adapter harnesses I make:

CANbus S54 for OBD2 E36 with 20-pin diagnostic port:



S62 for E30:



S54 for E30 (this updated version puts fuel pump relay in stock location under M3 harness cover):



S62 for E30 M3:



S54 for OBD2 E36 with wires to connect to Z3M instrument cluster (this updated version puts fuel pump relay mounted in stock location on side of fuse box):

[ZM Blue Devil]

Bump for a good service.

[Asbradley21]

Email sent.

[brian52555]

Awesome service. What's the core charge if I don't have a harness to provide you with?

[Andrew325is]

Awesome service. What's the core charge if I don't have a harness to provide you with?

I actually don't need a harness from you unless you'd like to have one adapted that will not reach your ECU mounting location. I can provide you with a new Z3 harness for $500. Slightly less for an E46 harness (I just found one for $279 although you can probably do better).

[89AlpineM3]

Email sent bud, looking forward to it

[Luke_M]

Email sent

[GK-E30M3]

sweet i will in for s54 just need to organize some stuff

[phreshkid]

I am really really keen to the idea of an aluminum block m54 in a 2002.

Hypothetically speaking, it should be easier?

[CrusherCurtis]

^Yeah an all aluminum, shrick cammed, double vanos, m54 sounds like a better idea than a s50 for my vert.

[Andrew325is]

Just shipped another one. :)

[Fidhle007]

This is awesome! Thanks! Someday I'll want one of these. Someday...

[kitsune]

I want one! Might have to order one before you stop making them.

Funny thing is, I don't have an e30 yet :( Planning and still looking at E30M available and don't want to spend over $18k if I don't have too :( LOL

Mike

[Andrew325is]

I just shipped one to Spain. :)

[Andrew325is]

Sent one to Australia. :)