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4+3 overdrive relay location

Old 11-11-2016, 06:43 PM
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DMITTZ
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Default 4+3 overdrive relay location

Hi guys, I'm wondering if anyone had a diagram showing where the 4+3 Transmission relay is located on a 1988 Corvette?
Old 11-11-2016, 10:37 PM
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FOURSPEEDVETTE
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If it's like my 85 is, the relay is next to the windsheild wiper motor on the fire wall. The fuel pump and overdrive relays are right next to each other. They are identical to each other.
Old 11-11-2016, 10:46 PM
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Thank you for the reply. I did look there, but there is only one relay in that location on my car and it is for the fuel pump... (I disconnected the relay in that location and the fuel pump did not active, so I'm sure that is what it is). Maybe the location is different on my 88?
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Old 11-12-2016, 03:34 AM
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WVZR-1
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Originally Posted by DMITTZ
Hi guys, I'm wondering if anyone had a diagram showing where the 4+3 Transmission relay is located on a 1988 Corvette?

The O/D relay on your '88 is going to be on the LH w/house rear panel. It will be the outer most. The '88 FSM shows the location mentioned by 'FOURSPEEDVETT' BUT there's an electrical supplement that corrects some of the critical component locations and also some of the wiring diagrams.

Do you have the FSM for your car? I guessed NOT or maybe you do and just don't have the supplement that would correct much of the '88 FSM. This is from the "SUPPLEMENT".

Name:  Cooling Fan & OD Relaay '88.png
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Old 11-12-2016, 09:31 AM
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DMITTZ
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Thank you so much WVZR-1 that was exactly what I was looking for, I really appreciate the help.

I have a manual, but I guess it didn't have the supplements, which Is why I was confused as to where the relay was. Now that I know there are supplements I will try to get an updated fsm or the updates.

Thanks again for the help.
Old 11-12-2016, 09:45 AM
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Just ordered a 1988 electrical supplement.
Old 11-12-2016, 09:48 AM
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Originally Posted by DMITTZ
Just ordered a 1988 electrical supplement.
I've sent an email using the link in your profile. Drop me an email!
Old 11-12-2016, 01:54 PM
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Originally Posted by WVZR-1
I've sent an email using the link in your profile. Drop me an email!
​​​​​​​E-mail sent.

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