91 Alternator Cable

[the4biddendonut]

I wanna upgrade the alternator power cable on the 91, since the stock wire looks like a 14 awg to me. I can't trace where the wire goes because it gets lost in the engine harness and wire looms.

Can someone tell me where the other end terminates??? I think it terminates at the solenoid. Or does someone have the wiring diagram???

Thanks for reading.

 

[the4biddendonut]

Anyone? I wanna get this done tomorrow, if I can!

 

[SHO1]

I'l check my schematics and see if I can tell anything from that. If not I'll check a loose harness I have, but not sure if I can get to very easy right now.

 

[1993MTXSHO]

I can't help with wiring diagrams but if you're chucking that wire off your old harness/plug, I might want it so shoot me a pm if you're getting rid of it. I'm downgrading my alternator in my 94 so I need a gen 1 type pigtail

But try a search, I found some good info there when I was looking around how to downgrade my harness to the gen 1 style.

 

[SHO1]

I wanna upgrade the alternator power cable on the 91, since the stock wire looks like a 14 awg to me. I can't trace where the wire goes because it gets lost in the engine harness and wire looms.

Can someone tell me where the other end terminates??? I think it terminates at the solenoid. Or does someone have the wiring diagram???

Thanks for reading.

It splits off to a 14ga. fusible link, which then goes to starter relay AND to a diff. fusible link, which I think is 18ga. (number is so small it's all plugged up) and then splits several times to which looks like to the ircm and once to ign. sw to ign. coil batt. terminal.

 

[the4biddendonut]

It splits off to a 14ga. fusible link, which then goes to starter relay AND to a diff. fusible link, which I think is 18ga. (number is so small it's all plugged up) and then splits several times to which looks like to the ircm and once to ign. sw to ign. coil batt. terminal.

Thanks for looking it up Duwayne. So there is one wire that goes directly from the Alternator to the Solenoid, and it doesn't have any other connections in between?

I was thinking of just disconnecting the tiny original Alternator power wire, but leave it on the car and secure it. Then, I'd run my own big ass cable from the alternator to the starter solenoid.

I suppose eliminating fusible links isn't such a great idea though.

 

[SHO1]

It looks like it goes straight to the selenoid except for the f. link. and there is another wire that comes out of that same link that goes to a diff link that then goes to the 2-wire plug that's on the Alt.


Is there 2 wires on that Alt. terminal? I can't remember, havn't looked at that part for a few years. If so, one goes to the other route previously mentioned and other the starter way. If not, it splits off somewhere downline before the links.

 

[SHOZ123]

No way is the alternator output wire 14 ga. It probably is or should be #8 or #6 wire. It first goes to the starter then up to the underhood fuse box with the fuse links in between.

If you want to beef up this circuit then use some #4 wire with an inline ~150A fuse then go to the starter as OEM. From the starter to the underhood fuse box use #4 wire and eliminate the fuse links. The inline fuse should be rated at 100% of your alternator output.

Anything over #4 is overkill unless you have a vampire sub amp. Be sure the alternator is grounded adequately too. A piece of #4 from the aluminum alternator body to a common battery ground point is just as important.

 

[the4biddendonut]

It looks like it goes straight to the selenoid except for the f. link. and there is another wire that comes out of that same link that goes to a diff link that then goes to the 2-wire plug that's on the Alt.


Is there 2 wires on that Alt. terminal? I can't remember, havn't looked at that part for a few years. If so, one goes to the other route previously mentioned and other the starter way. If not, it splits off somewhere downline before the links.

Yeah, it's a 2 wire harness. The alt wire does have continuity between the solenoid, but I just wasn't sure if the wire split off somewhere else down the line or not. There is another wire that is crimped onto the same ring terminal, don't know where it goes, but I should probably keep it hooked up then.

No way is the alternator output wire 14 ga. It probably is or should be #8 or #6 wire. It first goes to the starter then up to the underhood fuse box with the fuse links in between.

If you want to beef up this circuit then use some #4 wire with an inline ~150A fuse then go to the starter as OEM. From the starter to the underhood fuse box use #4 wire and eliminate the fuse links. The inline fuse should be rated at 100% of your alternator output.

Anything over #4 is overkill unless you have a vampire sub amp. Be sure the alternator is grounded adequately too. A piece of #4 from the aluminum alternator body to a common battery ground point is just as important.

I was exaggerating, it looks like an 8 or 10 awg, definitely not a 6 awg. In my opinion, it's too small.

I don't think I have a under hood fuse box though.

Thanks for the help guys.

 

[Vnuk1]

Dan I am coming over after work and bringing a Voodoo Witch Doctor named Ihemeumputoo (Eye-he-me-om-poo-too) and we will send the Evil SHO Spirits back to which they came from! No really I'll be there at 11pm. We will need a live Chicken so pick one up would ya thanks!

 

[SHOZ123]

All Tauruseses have an under hood fuse box. On the drivers side strut tower.

The wire isn't that big because it doesn't carry much current.

 

[the4biddendonut]

Do you think one chicken will be enough??? This might require several chickens or a cow maybe.

 

[Vnuk1]

Wellllllllll I think it should be enough. But seriously are you gonna come to Jeremiahs with me tomorrow I think the wife and kid are gonna sit this one out.

 

[SHO1]

Yeah, it's a 2 wire harness. The alt wire does have continuity between the solenoid, but I just wasn't sure if the wire split off somewhere else down the line or not. There is another wire that is crimped onto the same ring terminal, don't know where it goes, but I should probably keep it hooked up then.



I was exaggerating, it looks like an 8 or 10 awg, definitely not a 6 awg. In my opinion, it's too small.

I don't think I have a under hood fuse box though.

Thanks for the help guys.

Don't know the wire size, my '89 looks like 10 give or take 1 size and the fusible link is clearly marked as 14ga. on the '91 schematic. Definately no underhood fuse box on the '89 and no resemblance of one in the alternator to starter circuits on the '91 schematic. I'm thinking it maybe started when they went to selenoid on starter and/or anti-lock and/or atx or a gen1 to gen2 thing?

And yea the other wire is prob for the ign./ircm circuits. leave it off and you will prob find out fairly easy.

 

[SHO1]

So..., you get it all figured out/completed?

 

[Vnuk1]

No it's still taken apart from what I gathered on Tuesday when I spoke with him.

 

[SHO1]

Well, WTH! Good thing you got a back-up SHO.

 

[Vnuk1]

Yeah but he is a little nervous driving that one for some reason LOL....

 

[AREA 91]

The Gen I SHO's have a seperate starter solenoid on the driver's side fender. There is also no fuse box under the hood.

Gen II SHO's have an intergrated starter solenoid, and they have a fuse box on the driver's side strut tower.

 

[SolidState]

I am thinking of doing the same thing, but was simply going to run a 4awg wire from the alternator to the starter solenoid on my 91. But all this talk of fusible links has me thinking I need to do some more digging...