starbucks

Hey guys I am alittle confused and need some help. I just did an alternator relocation and now my alternator is not charging to battery.I have done A search and have found that the exciter wire is sapossed to have 12 volt going to it to tell the alternator to start charging the system, is this correct? The exciter wire only has like 10 volt coming out of it. If this is correct can I basically run a switched 12 volt to the alternator to get it to charge And call it good? For whatever it worth I have relocated the battery to the trunk and it has been this way for about a year.

MattSapp95_T/A

iTrader: (35)

how did you do the alternator relocate? Did you use a modified stock bracket? Is it painted or powder coated?

Reason I ask is because I had mine powder coated and it would not charge becausde the alt was no longer grounded.... I added a grounding strap to the alt and it works great...

starbucks

Yeah I have a speed inc that they powder coated black. How dis u ground the alternator

MattSapp95_T/A

iTrader: (35)

there is a spot on the back of the alternator you can screw a bolt in.....Just put a ground strap on that and run it to the frame... Should fix your prob...

Matt

starbucks

I'm sure it doesn't make a difference but I should be ok to go from the alternator to the cylinder head ?

killamike

correct

quik95lt1

iTrader: (7)

ok this is ironic......i just did the same and im having an issue and literally just got off the phone with painless performance with the solution about 3 minutes ago lol........i did the speed inc relocation with the ls1 alternator.....
apparently if you use the painless 30507 pigtail kit you need to hook up both wires from the pigtail.....the brown wire gets the resistor in series with it then you tie that to the pink wire and connect both of those to your exciter wire out of the harness. I dont know if you did this too but thats ur problem if you didnt' do that. If not check the ground from the alternator to the battery post you should have 0 ohms.

starbucks

Still using the stock alternator

airfix

iTrader: (30)

I had the same issue with my powder coated Speed Inc relo kit, So have a few other ppl. It's a pretty simple problem but to figure out, but it took a while for it to click in my head. Speed Inc should really tell people this when they send them a powder coated kit just to save their customers the headache.

airfix

iTrader: (30)

I did this aswell, I was to lazy to take the bracket off and scrape off all the powder coat in the mounting areas.

quik95lt1

iTrader: (7)

what about the bolt though? the bolt isn't powder coated and it touches the case of the alternator and the engine block??

starbucks

This is ahold point. I wonder if that might not be a good enough connection?

airfix

iTrader: (30)

I'm not sure how the speed inc ls1 alternator set up is like. If you unsure that your getting a good ground, get a set of jumper cables only using one lead on them and clamp one end on the alternator and the other end on a shock tower stud or whatever ground you choose. Now check to see if your alternator is charging. thats just a quick way to check if you have a ground issue.

Hope this all makes sense.

airfix

iTrader: (30)

You can just quickly make or buy a small ground cable. Bolt it to the back of the alternator case and then to somewhere on the body. If you choose to do this make sure your ground connections are clean and making good metal to metal contact.

starbucks

It does make sence. Thanks guys I'll try that ground strap tonight when I get home from work and then let you know how it worked

MattSapp95_T/A

iTrader: (35)

I would use a pretty good size wire to ground it....I tried a little one and it got pretty hot....

I made my own relocate bracket for mine and had it powder coated and chased this prob on my car for a week and a half and went through 3 alternators... then all the sudden it clicked that I needed a ground...



The mounting bolts are not enough to ground it....

I would be willing to put money on it that this fixes it!

Let us know either way I am curious..

airfix

iTrader: (30)

Matt, I see you relocated your hood release cable Did you need a longer cable? I'm guessing you just routed it through the wheel well?

starbucks

Thanks guys all it was was a bad ground i used some 10 gauge wire to gounrd the alternator to the head, does this sound big enough?

airfix

iTrader: (30)

I'm not sure sounds a bit small to me. I used a 4awg Welding cable to the frame rail.

Young Maro

iTrader: (5)

Looks ALMOST as good as my engine