alternator loom question

cosworth_wannabee · 13-01-2010, 06:24 PM

hi all, i have a 88 spec escort rs turbo. i have purchased a new alternator where the wiring is different is a bit differennt. just a quik question about the loom....

i have found out where the 2 b+ wires go on the alternator, but i am thinking of renewing the wires from alternator to battery as these are old. do they go straight from B+ on alt to battery+ or do they go off somewhere else in the loom first??

does the alternator need to be grounded or does it get good enuf earth off engine.

and there is a smaller wire that goes to dash bulb, my dash bulb does not work, does this need to be wired for the alt to charge the battery or is this solely for the warning light?
cheers, aaron

If you were logged in, you wouldn't be seeing this ad!
Register your free account today, or log in if you already have an account.

tabetha · 13-01-2010, 08:30 PM

The warning light needs to work, so renew the bulb, the blue wire as you know goes on the "IND" of the terminal for this.
It will normally start to charge if revved high enough, this is a built in safeguard.
The B+ wires normally go direct to the battery, on some cars they go to the starter feed, as this is direct from the battery too.
If you unpick the insulation you'll find they are actually joined together in the loom, into one wire that is thinner than the two reds were, and the soldered joint will be absolutely covered in corrosion.
Engine grounding is totally adequate, as it needs to be to operate/supply earth to the starter anyway.
tabetha

cosworth_wannabee · 13-01-2010, 10:34 PM

ok cheers thats all i wanted to know. my old alternator used to charge if revved high (bulb on dash didnt work) so i obviously didnt need a new alternator just needed to renew the bulb lol. cheers 4 advice, aaron.

tabetha · 14-01-2010, 01:01 PM

No probs matey, good luck with it.
tabetha

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

13-01-2010, 08:30 PM	#2
tabetha BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: Jul 2006 Location: uk Posts: 24,646 Rep Power: 0	The warning light needs to work, so renew the bulb, the blue wire as you know goes on the "IND" of the terminal for this. It will normally start to charge if revved high enough, this is a built in safeguard. The B+ wires normally go direct to the battery, on some cars they go to the starter feed, as this is direct from the battery too. If you unpick the insulation you'll find they are actually joined together in the loom, into one wire that is thinner than the two reds were, and the soldered joint will be absolutely covered in corrosion. Engine grounding is totally adequate, as it needs to be to operate/supply earth to the starter anyway. tabetha

13-01-2010, 10:34 PM	#3
cosworth_wannabee Part of the Furniture Garage is empty, add now Trader Score: (0) Join Date: Dec 2006 Location: Birmingham Posts: 162 Rep Power: 6	ok cheers thats all i wanted to know. my old alternator used to charge if revved high (bulb on dash didnt work) so i obviously didnt need a new alternator just needed to renew the bulb lol. cheers 4 advice, aaron.

14-01-2010, 01:01 PM	#4
tabetha BANNED BANNED Garage is empty, add now Trader Score: (0) Join Date: Jul 2006 Location: uk Posts: 24,646 Rep Power: 0	No probs matey, good luck with it. tabetha

14-01-2010, 01:01 PM
PassionFord Ford Focus Paid Advertisement