Thought I'd share some info on a project I have just completed for a mates AE86 rally car build. I am no a professional or anything but it might be useful or interesting if you are doing a similar project.
AE86 with a 20 valve engine, atlas axle & tranx 5 speed.
The owner of the car was let down by the 'pro' who was originally going to wire it. I was eventually talked into doing it, took me 2 months of most of my spare time.
Initial problems...Tasks:
- I didn't take the original toyota loom out, it came in 2 very heavy bags with nothing marked or labelled, the original loom is MASSIVE and weighs a ton. its a very complicated loom. I coud no testing of anything before I started.
- Owner wanted to retain some of the original switch gear (lights, wipers & stalk). These systems are earth switched on toyota.
- It has a Omex 600 ECU, It was 'intergrated' (bodged) really badly into the original loom.
- Never seen so many scotch locs, how it kept going on the stages I'll never know!
The first thing I did was rewire the ECU loom, big job this , took me about 5 days on & off to do this. I took out 10 feet (yes, 10 ft!) out if the length of the mess that was the original ECU loom....never done one from scratch before... will it work?
- wire it for Omex 600 ECU
- Wired for Stack instruments including fuel gauge
- Push button start
- wired for big power lights & spots
- keep some original switch gear including intermittent wash / wipe & lights etc.
- I had 'free reign' regarding layout & other options
It had some unmarked relays wired in at various places, sorted these when I worked out what they were for. One that had me stumped for a while was one for the VVT cam timing triggered by an auxiliary circuit in the Omex 600. I didn't recognise the component on the engine!
Lots of photos to follow
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