Important grounds?

[littleorange124]

What are the most common ground wires that cause electrical malfunction and where are the located? I have a 1981 fiat spider with electric windows

[4uall]

[4uall]

all kidding aside here is a good start

give us some details such as: do you currently have an electrical issue

http://www.fiatspider.com/f08/viewtopic ... &sk=t&sd=a

https://www.youtube.com/watch?v=EgwR9sYN5f0

http://www.artigue.com/fiat/

[littleorange124]

Dim headlights, slow power windows and dim tail lights

[TX82FIAT]

I would suggest starting with the ground pods on the right and left fender, under the dash and in the trunk by the drivers side wheel well. Then move to your grounding straps engine/transmission and battery cable. After those items I'd start cleaning up connectors. Most likely you have several weak points increasing resistance.

[4uall]

Here is some visual info as well

http://fiatspider.com/f08/viewtopic.php ... it=grounds

http://fiatspider.com/f08/viewtopic.php ... t=+grounds

http://www.mirafiori.com/faq/content/el ... estore.htm

http://fiatspider.com/f08/viewtopic.php ... ds#p171366

GOOGLE is your friend

[GeorgeT]

To cure dim headlights install relays.

[azruss]

to cure the stuff you want, you need to clean all the electrical connections in the circuit. Adding relays for the high draw stuff takes the load off the ignition switch. This is always a good thing. I built a relay set for the entire car.

[tartan18]

That is a sweet custom module. I am impressed.

[DieselSpider]

I have started with the relays using the Optronics Universal 40 Amp relays that sell at Advance Auto Parts for $4.99.

The Fiat wiring really was not sufficient for the solenoid that pulls in the starter drive gear on a 2kw diesel starter. Right now I have a relay for the starter solenoid and another for the diesel fuel valve however I did not get them in soon enough to save the starter which is about to give up the ghost.

Rebuilt lifetime starter from Oreilly's will be here in the morning. The unit for the little 1.8L 4 cylinder diesel is about the same size as a gear reduction starter from a big block (440 cu in) high compression V8.