No wonder I couldn't see the plate - thick with oil totally obscuring it. Took some serious de-gunking to make it legible:



Not sure what the numbers mean anything to you, but interested to know if they do. Also here are some pics so again not sure if there's any of the US spec emissions stuff still remaining:

132 means derived from the engines in the Fiat 132, A1 means 1756cc and 040.6 means one of several US versions (Euro versions are 000). The bottom number is the engine number. There's hardly any emission control stuff on there, my first 124 Spider from 1974 had an exhaust cam driven air pump with injection points next to the spark plugs and all sorts of extra pipes and connections on the carburettor.

That air filter you have is missing a pipe that brings hot air up from above exhaust manifold in winter with a fixed flap under the top of the air filter "lid" that you move to one of two positions

Yes, I agree with DaveG, it appears to be a US engine.

I see you still have the anti-smog relays and wiring. I removed mine and rewired to make it neater.

Thanks both, that's really useful. I need to get a proper workshop manual as my understanding of electrics is pretty woeful. I got a Hayes manual off amazon last week, but it's a reprint and isn't all that good.

Are the anti-smog relays the banks of six square things in the bottom right of 2nd pic? probably showing my ignorance now, so might be best I leave well alone.

Did you mean a Haynes manual? The hardback one with a light green cover and a (BC, IIRC) Coupe on the front? When you say it "isn't all that good" do you mean the quality of the reprint is poor, or the content is poor? I thought (content wise) it was pretty good, produced in the days when they used a lot of manufacturer drawings. Obviously it relates mostly to the Coupe but it does acknowledge the Spider and does have some Spider-specific wiring diagrams - it may not have your exact wiring schematic but you should find something good enough, plus over the years you may find that some modifications have been done. I have one pristine version in a cupboard and another rather messy version in the garage.

There's a spare parts manual produced in the US that shows those relays and other associated anti-smog gubbins which I can scan to PDF and email if you want, but unless it's interfering with the running of the engine, I would say leave it all there, I would assume that DTR removed all the unnecessary stuff already.

Half are and half are not.
Send me your email and I'll try to sort out a wiring diagram for you.
Tell me what is on the plate inside the drivers door jam, model year wise

Cheers both. Pic of plate below (type 124 CS1 made 1976). I'll PM you my email. The Hayes manual I got was a softback reprint where the reprinted photos have come out v.v. dark and a bit too much guesswork is required. When I was the Brooklands Autoitalia event I saw a proper 124 workshop manual for sale that was far far better in terms of detail. But it was for the sedan version, so I passed. If I could get one of those for the coupe/spider then I'd probably feel a bit more confident.

Chris, Have you had a look on the Fiat Forum website? http://www.fiatforum.com/

I ask as I was able to download a workshop manual for the X 1/9 there a couple of days ago.

good thinking Pete - I'll give it a go. I've had a quick search but need to scour it a bit more.