HM Auto Electrical

HM Auto Electrical Electrical Harness design manufacture, braiding. Auto Electrical, Diagnostic Analysis, Air Condition

HM Auto Electrical specialist in Automotive, Agriculture, Marine servicing auto electrical fit-outs , repairs and diagnostics, Air-Conditioning, battery's, lights accessories. OEM electrical harness upgrades, Electrical harness/loom Braiding. We provide Prompt mobile service and also have workshop facilities. Harness Braiding
Braid is composed of pvc coated nylon threads woven tightly around elec

trical harness/loom. Braiding is important for electrical harnesses as it extends the service life of harnesses provides a protective layer from chafing, heat, oil, antifreeze, hydraulic fluid, moisture and other wear and tear to electrical harnesses

Turbolamik Tcu back instock # hmauto.co.nz
06/07/2026

Turbolamik Tcu back instock # hmauto.co.nz

DomiWorks LS to 8hp70 adapter ready to be shipped out.
03/07/2026

DomiWorks LS to 8hp70 adapter ready to be shipped out.

Ever wondered what actually happens when your car’s warning lights won’t make sense? Electrical diagnostics in cars is t...
02/07/2026

Ever wondered what actually happens when your car’s warning lights won’t make sense? Electrical diagnostics in cars is the professional process of pinpointing faults across the wiring, sensors, and control systems—so you’re not left guessing or paying for unnecessary parts. At HM Auto Electrical, our certified team in Rolleston uses precise testing to deliver accurate findings and dependable repairs with peace of mind. If you’re due for a WOF-related electrical check or troubleshooting a persistent issue, understanding the process is your best starting point.

https://hmauto.co.nz

Another quality domiworks adapter this time for XR Falcon 302 turbo v8
20/06/2026

Another quality domiworks adapter this time for XR Falcon 302 turbo v8

13bpp 8hp45 conversion, will be running n20 torque converter
20/06/2026

13bpp 8hp45 conversion, will be running n20 torque converter

Rx8 class race car replacement engine harness made with good qualtiy cable, dr25 to handle the heat 🥵 .co.nz #
10/06/2026

Rx8 class race car replacement engine harness made with good qualtiy cable, dr25 to handle the heat 🥵

.co.nz #

Another high quality domiworks 8hp to ls adapters ready to send out
24/03/2026

Another high quality domiworks 8hp to ls adapters ready to send out

DomiWorks adapter for my pp13b 8hp45 mk2 cortina
11/03/2026

DomiWorks adapter for my pp13b 8hp45 mk2 cortina

03/03/2026

Few nuke performance goodies, to go into HMAuto sr23vet 8hp70 endurance/oscar car. If your after any nuke products see our website or hit us up

02/03/2026

Last round of Mazda pro8 racing at Ruapuna this weekend Stiaan Kriel last season Australia champ will being driving the hmauto lease car, looking forward to seeing how he goes

Address

786 Waterholes Road
Christchurch
7678

Opening Hours

Monday 7:30am - 5:30pm
Tuesday 7:30am - 5:30pm
Wednesday 7:30am - 5:30pm
Thursday 7:30am - 5:30pm
Friday 7:30am - 5pm

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