700R4 electronics - The 1947 - Present Chevrolet & GMC Truck Message Board Network

MidnightBlues · 11-04-2002, 06:08 PM

Does anyone happen to know how I connect the electronics to my 700.
When I bought the truck 4 years ago somebody changed the original 700 with a 350.I just put in a new 700 and try to figure out how to connect it.All the wires are still there I think,but it's just a mess of wires right now.
I looked at Swervins site(and a lot of others),but I don't have the TVS and no computer.There are just two wires( instead of three I saw in other articles) on my connector to the 700.Where do they go???

**swervin ervin** · 11-04-2002, 11:23 PM

Are you saying where do they go at the tranny or elsewhere? Up top they plug into the low vac switch which is mounted beside the brake booster on the firewall. Then of course they plug into the tranny.

If you have no TVS, just run a vacuum line to the low vac switch. You should have the wires going from the low vac to the brake switch too.

gchemist · 11-05-2002, 08:30 AM

Get it wired? My'83 should be the same. All 82-84 had the same tranny. In 85 they chagned a few things to the trannys. I have a factory service manual if you need more help.

MidnightBlues · 11-05-2002, 10:33 PM

Thanks for your replies.Feel already at home here

In the wire mess under the hood I found the connector wich goes to the tranny,but I have to check if the rest is connected right.The low vac switch is connected,but the brake switch wiring and switch has been removed from the pedal.So i have to find the right wires in the wire mess.I suppose they're all there somewhere.
It really would help if I had a scheme with the wire colours.
Do you by any chance have that Gerardo?

gchemist · 11-06-2002, 08:06 AM

André,

I'll look through my manual and see what I can scan and e-mail you tonight when I get home.

MidnightBlues · 11-06-2002, 06:32 PM

Thanx Gerardo,I'll check my mail

gchemist · 11-07-2002, 08:15 AM

André,
I could not make heads or tails of all the wiring diagrams. The RPO code for the auto tranny is MXO. All I found was MD4 or MD4.
Check out these sites.

http://www.700r4.com/Tech/TCC/TCCinternalwiring.htm
http://www.nitrophotos.com/700r4.html
http://www.c3sharktank.com/tech2/tranny1.html

Let me know if things work out for you.

MidnightBlues · 11-07-2002, 11:19 PM

Unfortunitely the links didn't help me much.So I guess I have to jump under the hood and use all my braincells

Unless you have another idea.Thanx anyway.
But first the paintjob next week,wich will probably take some time cause almost all sheetmetal will be replaced.(This will be a brandnew truck when I'm finished with it.)
I'll let you know what happens

gchemist · 11-08-2002, 08:29 AM

My scanner is experience problems. Once I get it connected I'll scan the auto trannys in the manual. One of the diagrams should of some help.

MidnightBlues · 11-08-2002, 06:50 PM

Great,G.Every info is very welcome.

11-04-2002, 06:08 PM	#1
MidnightBlues Registered User Join Date: Oct 2002 Location: The Netherlands Posts: 118	700R4 electronics Does anyone happen to know how I connect the electronics to my 700. When I bought the truck 4 years ago somebody changed the original 700 with a 350.I just put in a new 700 and try to figure out how to connect it.All the wires are still there I think,but it's just a mess of wires right now. I looked at Swervins site(and a lot of others),but I don't have the TVS and no computer.There are just two wires( instead of three I saw in other articles) on my connector to the 700.Where do they go??? __________________ Andre 1984 C10 SWB, 350/700R4

11-04-2002, 11:23 PM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Are you saying where do they go at the tranny or elsewhere? Up top they plug into the low vac switch which is mounted beside the brake booster on the firewall. Then of course they plug into the tranny. If you have no TVS, just run a vacuum line to the low vac switch. You should have the wires going from the low vac to the brake switch too. __________________ Mike 1985 Chevy C-10

11-05-2002, 08:30 AM	#3
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Get it wired? My'83 should be the same. All 82-84 had the same tranny. In 85 they chagned a few things to the trannys. I have a factory service manual if you need more help. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

11-05-2002, 10:33 PM	#4
MidnightBlues Registered User Join Date: Oct 2002 Location: The Netherlands Posts: 118	Thanks for your replies.Feel already at home here In the wire mess under the hood I found the connector wich goes to the tranny,but I have to check if the rest is connected right.The low vac switch is connected,but the brake switch wiring and switch has been removed from the pedal.So i have to find the right wires in the wire mess.I suppose they're all there somewhere. It really would help if I had a scheme with the wire colours. Do you by any chance have that Gerardo? __________________ Andre 1984 C10 SWB, 350/700R4

11-06-2002, 08:06 AM	#5
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	André, I'll look through my manual and see what I can scan and e-mail you tonight when I get home. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

11-06-2002, 06:32 PM	#6
MidnightBlues Registered User Join Date: Oct 2002 Location: The Netherlands Posts: 118	Thanx Gerardo,I'll check my mail __________________ Andre 1984 C10 SWB, 350/700R4

11-07-2002, 08:15 AM	#7
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	André, I could not make heads or tails of all the wiring diagrams. The RPO code for the auto tranny is MXO. All I found was MD4 or MD4. Check out these sites. http://www.700r4.com/Tech/TCC/TCCinternalwiring.htm http://www.nitrophotos.com/700r4.html http://www.c3sharktank.com/tech2/tranny1.html Let me know if things work out for you. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

11-07-2002, 11:19 PM	#8
MidnightBlues Registered User Join Date: Oct 2002 Location: The Netherlands Posts: 118	Unfortunitely the links didn't help me much.So I guess I have to jump under the hood and use all my braincells Unless you have another idea.Thanx anyway. But first the paintjob next week,wich will probably take some time cause almost all sheetmetal will be replaced.(This will be a brandnew truck when I'm finished with it.) I'll let you know what happens __________________ Andre 1984 C10 SWB, 350/700R4

11-08-2002, 08:29 AM	#9
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	My scanner is experience problems. Once I get it connected I'll scan the auto trannys in the manual. One of the diagrams should of some help. __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos

11-08-2002, 06:50 PM	#10
MidnightBlues Registered User Join Date: Oct 2002 Location: The Netherlands Posts: 118	Great,G.Every info is very welcome. __________________ Andre 1984 C10 SWB, 350/700R4



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