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Old 09-22-2003, 10:12 AM
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fgc is absolutely right about the wire gauge. 22 ga is WAY too small for the loads involved and it will scare the pucky out of you when you see smoke billowing out from under the hood as the insulation from the 22 ga wire welds itself to the main harness. I'd recommend 12 ga minimum.
I drew the ignition switch relay diagram yesterday and I'll send it to Simon later today. I'd think it will posted in the electrical diagram section shortly after that.
You know Sniady (and other budding auto electricians), I was scared to death of doing electrical work prior to my final exam at the auto tech school (also in AZ, BTW). The exam consisted of one statement; 'Draw a wiring diagram of the car you are currently driving'. Luckily, I was driving a 68 Dodge. But the point is, once I drew the thing, I then understood how everything is connected together as a 'system'; the headlights, tail lights, charging, etc. are sub-systems of the entire electrical system. That exam taught me to look at the sub-system involved and not be overwhelmed by the complexity of the entire electrical system. It's been cake ever since!
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Series 1 Euro 1750 GTV
Series 2 USA 1750 GTV
Series 3 Spider Veloce

Last edited by papajam; 09-22-2003 at 10:28 AM.
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Old 09-24-2003, 08:27 PM
fgc fgc is offline
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Papajam is right about drawing the wiring diagram. I was totally stumped trying to trace the wires and understand the circuit as a whole but when I broke the circuit down to its individual components and sub-systems by redrawing the circuits, the whole thing suddenly made sense. Took me a few nights spare time to do this and now the alfa electrics is no longer a mystery.

when wiring them up, always test each sub system before powering up the harness as a whole. Let me tell you though that even after repeated checks, it was one scary feeling powering up the system the first time round. I would test it for short periods then progressively longer periods until I am certain that there is no short circuits or over heating issues. Always keeping my sensors alert and later when I started driving the car, to check on all the wires after each progressively longer drive. (Though I have wired it up to higher than factory specs, I am still cautious??? I am born that way or just being an**???)

But if you are not sure of what you are doing or what to do, please get someone experience like Jim etc to repair the harness for you. because the amount of power that the alternator and the battery can kick out is quite scary and with all that fuel sloshing about and leaky oil and flameable bits ... it pays to be careful. NOT TO SCARE ANYONE BUT PLEASE NOT THAT THE STARTER CIRCUIT IS VERY NEAR THE FUEL PUMPS AND IN MY CASE THE CARBS ETC so please be extra careful.

As for me, I have been experimenting with electric and electronics for the last 20 years and have progressively built up a technical background by reading technical manuals and books (something that anyone can do). For this wiring job, I still went out and bought 3 books on wiring up a car just to understand the practice and priciples involved just to be safe.

Having said that, wiring (if you know what you are doing) and if done right is safe but otherwise, please get someone experienced to do it for you.

fgc
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Old 01-27-2004, 08:34 PM
sono veL.O.ce's Avatar
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doing your own wiring

I knew only basic electric theory, but never really got the hang of electric wiring until I learned about basic wiring techniques and "good wiring habits" from a long and late night conversation with a knowledgeable friend. Basically a good technique and a familiarity of the proper tools and types of connectors will go a long way for those of us with our feet halfway through the door.
there is also a somewhat good write up on basic auto wiring in grassroots motorsports vol 20 number 7 nov 2003. for those who are interested. It breifly covers tools, wire chioce and connectors. My biggest breakthrough, buying a decent crimper! high quality tools make high quality connections. The difference was night and day.

If I were to completly rewire a GTV I would put some of the theory to use as well. Upgrade the fusebox, lights, and add relays appropriatly.
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