Toyota Starlet EP91 Plug-in Wiring Loom - Haltech 550 / 750

• Free variable TPS sensor mount included! Required for factory manual 4E-FTE cars with non-variable OEM sensor. TPS Sensor not included.
• JDM / UK / Irish / Aus - RHD 4E-FTE/FE only - other models still possible but are a custom order so get in touch.

What's a plug-in wiring harness?

Unlike a patch harness, a plug-in wiring harness is a complete replacement for the engine wiring, see the diagram below for the 98/99 Glanza V, highlighted in green. This harness seamlessly connects to the engine bay fusebox and interior body connectors (2/3, depending on your year/country/engine). Most factory functions are retained; details on what stays and what doesn't are further explained below. The harness doesn't include a new battery cable, so you'll need to strip this from your existing wiring (check out the video at the bottom of this page for a guide). However, we're considering offering this in the future.

Is your build ever evolving? This wiring harness allows easy changes to injectors, coils, and additional features as required.

This harness uses sub harnesses with Deutsch/Amphenol DTM/ATM plugs for injectors, coils and additional features so you can change what you need to when you need to. We also supply the pinouts for these connectors so any competent wiring DIYer can make the changes themselves!

I don't see any options for fuel/oil pressure sensors or other features, can these be added?

Yes! We include 2 breakout connectors for this purpose, one in the engine bay and another in the interior. Because everyone's build is different, we decided the best approach would be a modular harness. This means everyone has the same main harness, which keeps costs low, and people can then choose to have whatever extra features they would like. To order custom additions, please get in touch!

Have questions?

Call us on +44 1475 325 091 or message us via the contact page, Instagram or Facebook. We're here to help!

Features

• Compatible with JDM 4E-FTE/FE, RHD UK/Irish/Aus 4E-FTE/FE models
• Manufactured using Tefzel (ETFE) wire - rated up to 150ºC (OEM is rated to 80ºC)
• Loom is covered using high temperature fibreglass braid- rated over 600ºC
• Injectors and Coils are on sub harasses so these can be changed in the future! 
• Choice of stock injector, EV14/USCAR or Bosch EV1 connectors.
• Choice of stock coil, K20 COP (coil on plug) or 2ZZ/Yaris COP.
• The harness is modular so you can customise the additional inputs and outputs! Common options are fuel or oil pressure, flex fuel sensor, clutch switch etc... get in touch with your requirements for a quote and to order
• Made in house using production line tooling by Komax, Mecal, Rennsteig, Knipex, DMC, TE, RaceSpec, Ideal and Sargent. For ultimate reliability no cheap generic tools will be used in the construction of your wiring harness, Toyota didn't so neither will we!
• Quality control including crimp height measurement and point to point pin testing.

Technical Specs and Connectors

• Suitable for Haltech 550 or 750
• Triggering - Stock 4E-FTE cam sensor (Crank Trigger can be added on as a custom change - please contact us)
• Intake Air Temp Sensor - Bosch 2 wire sensor connector - Sensor not included
• Coolant Sensor (ECT) - Bosch 2 wire or OEM Toyota 3 wire - Sensor not included
• Throttle Position (TPS) - EP Wiring Bosch TPS mount kit included! - Sensor not included
• Injectors - Choice of Stock Toyota (aka Denso style), Bosch EV14/USCAR (ID 1050X, EV14 etc) or Bosch EV1 (Junior Power Timer)
• Coils - Choice of Factory 4E-FTE, K20 Coil on Plug or 2ZZ/Yaris Coil on Plug - Coil packs not included
• Ground Ring Terminals for Coils, AUX, CAN and ECU
• Knock Sensor Wiring for Bosch 0261231006 - Sensor not included
• Boost Solenoid (MAC solenoid) - Solenoid not included - can be ordered from here!
• Engine Bay AUX connector (12V+ Power, Ground, 5V+ Sensor Supply, Sensor Ground and any spare I/O)
• Cabin AUX connector (12V+ Power, Ground, 5V+ Sensor Supply, Sensor Ground and any spare I/O)
• CAN Plug next to ECU wired to suit Haltech products such as Haltech WB1, Gauges or Dashes etc
• OEM Check Engine Light
• OEM Tacho signal for stock gauge cluster - Tacho modification by soldering a 1kohm resistor in gauge cluster (Check our our DIY video) or by wiring in something like a Haltech Tacho Output Adaptor
• Oil pressure light by OEM switch - If using oil pressure sensor on AUX plug you can wire the ECU to the Oil pressure light - ask for this in the order comments
• OEM Boost Switch
• Alternator wiring
• OEM fan switch - 98-99 cars only
• Brake fluid level connector
• Fuel Pump relay trigger from ECU output
• Speed Sensor Signal from Stock Gauge Cluster - If you are using a digital dash this will not work
• Windscreen wiper wiring

Not included but required for fitment:

• Haltech 550 or 750 ECU
• ECU mount - To make your life easier we made ECU mounting plates.

OEM parts not used:

• ABS - Some or all parts of ABS may no longer work. If required it is additional cost
• AC Vac solenoids - AC may still work, ask to confirm
• Stock idle valve
• Diagnostics port
• Battery power and ground cables - Original ones must be stripped from original wiring or 1996-1997 cars can purchase our replacement wiring here.

To see the install process watch the video of a similar install but with heat shrink covering rather than braid

https://www.youtube.com/watch?v=6TxAhOQTZ0o