View Full Version : TR6 Does a 75 amp alternator require a wiring upgrade of any kind?

07-08-2014, 08:08 PM
I am tempted to get a 75 amp Bosch alternator which BNR on eBay says is a direct bolt on. BNR comes with praise from others on this forum and they have great feedback. The alternator is here: https://www.ebay.com/itm/Triumph-TR7-TR6-Alternator-Generator-Bosch-75-Amp-For-Lucas-/350920590829

My question is do I need to upgrade any wiring in the car; specifically the main "brown" charging wire from the alt to the battery/starter block? I'd really don't want to do this because I don't want to rip up my pristine wiring harness on my 76. I don't want or need to power very much - there's no electric fan, driving lights, or high powered stereo. The car is stock.


07-08-2014, 08:36 PM
This should help you decide. https://www.powermastermotorsports.com/charge_wires.html

07-08-2014, 09:14 PM
That answer is just what I was looking for. Thanks a million.

07-09-2014, 11:11 AM
The stock wiring should be fine, given that you aren't really going to use 75 amps, except maybe for a few seconds right after a cold start.