Starter Relay

ZAR · Post by **ZAR** » Tue Sep 15, 2009 7:54 pm

Where can I buy a new starter relay thats like the original? I am replacing my battery cables and the post on the starter relay broke off when I tried to remove the nut. Thanks.

MOPAT · Post by **MOPAT** » Tue Sep 15, 2009 8:01 pm

NAPA, Autozone, etc.
They stayed the same on the trucks through the early 90's as I recall.

ZAR · Post by **ZAR** » Tue Sep 15, 2009 8:09 pm

Thanks, I tried autozone today and they could not find it so I will try good 'ol NAPA tomorrow.

MOPAT · Post by **MOPAT** » Tue Sep 15, 2009 10:55 pm

If they don't have one for a '64 ask for one for a '78 or a '84.
It is the same one as on my 79 B200 van.
SHOULD BE NAPA # SR3 made by Echlin..................

ZAR · Post by **ZAR** » Tue Sep 15, 2009 11:22 pm

MOPAT wrote:
If they don't have one for a '64 and for one for a '78 or an '84.
It is the same one as on my 79 B200 van.
SHOULD BE NAPA # SR3 made by Echlin..................

Part Number! You the man! thanks

Post by **Hobcobble** » Wed Sep 16, 2009 7:03 am

There might be two different part numbers for the auto tranny
vs. manual tranny relays. The auto tranny relay has an extra
post for the neutral safety switch.
John

MOPAT · Post by **MOPAT** » Wed Sep 16, 2009 7:30 am

John
You're probably right...

That PN is for a rig with a 727.

OLDTIMERS...........Forgot about the neutral switch post.

OH WELL!

nfury8 · Post by **nfury8** » Wed Sep 16, 2009 12:09 pm

If you find yourself in a bind and can't find the proper truck relay, the cars of the
same era used the same relay. The cars just had a different mounting bracket.
I had a car relay on my 71 for a couple months, because I had an extra one on the
shelf for my Plymouth.

ZAR · Post by **ZAR** » Wed Sep 16, 2009 9:24 pm

Thanks for the help got the correct one from NAPA today.

MOPAT · Post by **MOPAT** » Thu Sep 17, 2009 8:41 am

Out of curiosity what was the PN??

ZAR · Post by **ZAR** » Thu Sep 17, 2009 7:16 pm

it was SR3 like you stated.

rjmeuer · Post by **rjmeuer** » Wed Dec 23, 2009 2:21 pm

ZAR wrote:Thanks, I tried autozone today and they could not find it so I will try good 'ol NAPA tomorrow.

Why not just go to NAPA first? Most parts, and most knowledgeable counter people (most of the time!), not to mention better parts.

Relay for manual tranny is part# SR4

MOPAT · Post by **MOPAT** » Wed Dec 23, 2009 7:59 pm

Out of curiosity what is the difference between SR3 and SR4?

Ampacity, # of pins, their location, grounded or ungrounded, etc?

nfury8 · Post by **nfury8** » Thu Dec 24, 2009 4:17 am

The auto version has an extra pin which attaches to the neutral safety (backup light) switch,
and will not let the truck start in gear.

MOPAT · Post by **MOPAT** » Thu Dec 24, 2009 7:50 am

Since all mine are autos all I've used are SR3s. Does the plug in harness fit the same on the SR4 and just bypass the neutral lockout switch pin?
What I'm asking ( I GUESS) is can you use the SR3 as a "universal" relay?
At one time I thought I remembered reading {or being told} that one of the relays was 'grounded' internally to the body and one wasn't.
Just asking.

712edf · Post by **712edf** » Thu Dec 24, 2009 10:26 am

MOPAT wrote:Since all mine are autos all I've used are SR3s. Does the plug in harness fit the same on the SR4 and just bypass the neutral lockout switch pin?
What I'm asking ( I GUESS) is can you use the SR3 as a "universal" relay?
At one time I thought I remembered reading {or being told} that one of the relays was 'grounded' internally to the body and one wasn't.
Just asking.

If you use the auto tranny relay on a truck with a manual transmission, you must run a ground wire to the extra post that the wire from the NSS would normally plug into. That's what the NSS does, it provides a ground for that particular prong on the relay, but only in Park/Neutral. When the shifter is in another gear, the ground circuit is "open" and the relay won't send power to the starter.

Bucky

rjmeuer · Post by **rjmeuer** » Mon Dec 28, 2009 9:32 am

SR3 and SR4 Photos showing the extra pin. (SR3 has the Extra Pin) It also looks like the pin on the SR4 is just grounded to the body, but can't say for sure. Just saying thats what it looks like.

digdoug · Post by **digdoug** » Mon Dec 28, 2009 12:55 pm

Thats right ,Ryan. That pin is for the neutral safety switch.You can ground that pin,and the relay will function.

Doug

Post by **HellBelly** » Mon Dec 28, 2009 2:15 pm

Part number and information sent to Tech section.

Jims68 · Post by **Jims68** » Mon Dec 28, 2009 4:14 pm

Thanks for that bit of info! I have the "auto trans" one on mine and I just grounded out that extra leg for it to work.

Jim

Sweptline.ORG

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