Question on Marine Battery Terminal - Positive stud too big

amalik

Senior Member
Hi guys,

This can't be this hard, WTH!

Ok, so I'm simply trying to convert over to Marine-style terminals. Really nothing more than that right now.

97 3.4 Limited.

I absolutely hate the 2-bolt style terminal heads, and love the marine wing ones.

Here's what I purchased, per [MENTION=65101]BrianSD_42[/MENTION] recommendation a long time ago to me.

Amazon.com: Shoreline Marine Battery Marine Terminal Kit: Sports & Outdoors

Negative terminal, all went well, no issues.

Positive terminal? Nightmare.

Fits fine on the terminal itself; but none of my factory wiring lug heads fit the stud. I measured with a wrench and the stud is 3/8 for +, and 5/16 for the -, which corresponds to what pretty much every description is online for these marine style terminals, so no shocker there.

3/8 wrench on the right:

myxM7P5.jpg


Excuse the mess on the battery, due for a cleaning.

VqgPhwX.jpg


I can't find any product on Google where the + stud shows as 5/16. Every single + Marine is 3/8, like such:

Lynx/Battery Terminal End and Adapter 06070- ReadReviews onLynx #06070

I took my negative marine terminal end off and tried it on the positive, it doesn't fit, which makes sense, I think the + terminals ends are bigger (i.e. the difference between 5/16 and 3/8) because the actual terminal on the battery is bigger (Correct me if I'm wrong).

What did you guys do? I can't possibly be the only one with this issue with so many people switching to these terminals with Big 3 prep, so I hope.

I realize a solution could be to hack all the positive factory ends in favor of 3/8 lug nut ends. I've seen many people convert over to marine terminals and I don't think I've seen anyone had to do that. I'm not super comfortable with having to do that unless it's the last resort.

Maybe my terminal ends are not factory though for the positive and thus shouldn't be smaller than 3/8; not sure as I don't have the full history. This explanation would make the most sense, as it's hard to imagine the Toyota factory ones coming with electrical tape on the end and those cheapo smaller than 3/8 terminal heads. I just noticed that for the positive wires.

As always, thanks ahead.
 
Last edited:
Register to hide this ad
Yeah the wires that need to connect to the big terminal ---- make the those bigger so they'll fit around that big ass threaded tip.


Not sure what else to say at the moment
 
For cable end rings that fit try West Marine (local if possible) or NAPA, O'Reilly or similar.



Brian, quick question and I think I can put this to bed.

You also have a 97 limited if I recall...

Are all your positive factory wires 3/8 ring size?
 
I just had this issue , all my ring terminals were about 1/16th too narrow for the stud on the new terminals . Drill them out with a drill bit or the smallest sanding drum on the Dremel should just fit ....
 
I also replaced mine and had the same problem
I just shaved the inside of the connectors with a thin sharp kitchen knife, in a circular motion till they fit .took a while but they fit snug after
 
I just had this issue , all my ring terminals were about 1/16th too narrow for the stud on the new terminals . Drill them out with a drill bit or the smallest sanding drum on the Dremel should just fit ....

thanks... I do actually have a Dremel and some of the sander attachments.

So the 'wing' cap has no issues screwing on when you shave off part of the thread?

That'd be my only concern.
 
Last edited:
thanks... I do actually have a Dremel and some of the sander attachments.

So the 'wing' cap has no issues screwing on when you shave off part of the thread?

That'd be my only concern.

I am pretty sure they are not advising to drill out an threaded hardware but to "enlarge" the terminal ring connectors.
 
You can get those at the dealership. They're about $5 IIRC. They replace them often so they'll have them in stock.

I like the factory stuff myself.

I like this suggestion myself.

Part number is here:

Genuine Toyota Positive Battery Terminal 90982 05035 | eBay

One of my local dealers has it for $20. I'll try the other local dealer; if same price I'll just pick it up.

Thanks for the resolution here Jeremy and others who contributed; that was as easy as this should have been :)

Just a case of... my truck doesn't have the factory positive on there for some reason.
 
When I did this originally I do not recall any issues with the fitment as highlighted.

:zoom:
 

Attachments

  • 00001919222.jpg
    00001919222.jpg
    81 KB · Views: 417
Last edited:

Members online

Forum statistics

Threads
278,316
Messages
3,554,120
Members
248,016
Latest member
Advally Service

Trending content

Back
Top