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Old 02-19-2019, 01:29 PM   #6
hatzie
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Join Date: Oct 2008
Location: Wentworth, NH
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Re: TH 700R4 TCC lockup wiring

Quote:
Originally Posted by Dannyboy1966 View Post
Lucky for me when the previous owner swapped my rig to a SM465 they were nice enough to tie the wiring up and leave it hanging under the hood by the brake master cylinder. So I have the brake and low vacuum switch, my concern was the internal wiring with it having 2 of the wires going to the ECM. So on the 1989 transmission I just use the A and B terminals and just forget about the C? Here is a close up of the internal wiring. Tell me if I have it right or correct me. Thanks Hatzie
Plug it all back in and drive it.

C is unused... D is the EGR ECM terminal. Your harness doesn't have a wire in C or D. That doesn't matter.

The picture is not needed. I have the uncompressed scans and a 50" 4K monitor.
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1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
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1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
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2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
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RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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