2003 Volvo XC70 Big 3 Upgrade

[jeterfanguy1]

I need some help. I'm wanting to do The Big 3 Upgrade to my 2003 Volvo XC70 but, I'm not seeing any terminated wires coming out of my alternator. Only seeing 1 red wire going straight into the alternator that has rubber on the end of it.

Click to read more...

 

[DFW40 10+ year member]

That is normal. If you remove the rubber cover there should be a bolt. That is where you add your additional cable 1/0 gauge with a ring terminal (keep the original cable there just add to it so that way you are just increasing overall cable gauge(s). Run that wire along the existing cable or another route if you like back to the battery. Then add another cable from the battery to the body of the car. Also add another cable from the body of the car where the last cable was secured to the engine anywhere you can find a bolt that will fit your ring terminal, some ppl use a bolt that the alternator is secured with or any other bolt away from moving parts or very hot engine parts. Use those black split looms and black wire ties on all wires near high heat areas.

 

[jeterfanguy1]

Thanks for the info. Will see how it turns out.

 

[CSCStang]

Thanks for the info. Will see how it turns out.

You might have to cut some of the plastic around the bolt to get the 1/0 lug to fit though. Just make sure it doesn't ground to the alt.