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Old 08-08-2010, 11:21 PM   #26
clinebarger
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Join Date: May 2009
Location: Fort Worth, TX
Posts: 6,370
Re: Using an electronic speedo with TBI and 700R4?

Quote:
Originally Posted by mcbassin View Post
Any ideas of what wires beside ground, cluster and vss signal that must be connected?

Here is the 91 Suburban diagram from my good friend Cableguy:
C11 of the DRAC will go to the A10 terminal on the 24 pin connector of the ECM (curcuit #437, wire color-brown), This is needed for TCC, EGR & IAC functions.

C9 of the DRAC will need to be hooked to a ignition hot (curcuit #50, wire color-brown)
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