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2drezq
01-22-2005, 02:34 PM
The OHC is from a ’94. Going into a 94 SE without the ATC module. The harness is from a 95 Laredo with a ATC module.

The OHC end is a 13 way connector. Viewed end-on it is numbered right to left top row (smaller) 1-6. Bottom row 7-13 Connections are listed as: OHC end-wire/stripe color-function-harness connection-wire color-function-correct connection. When correctly connected all wire colors match. Connection is to 100-WAY CONNECTOR which is labelled bottom to top connectors A-H. A-f are 14 point, H & G are 10-point, black and red respectively. They are the main connectors on the harness. No reference is given here to other connections (Remote door-locks, alarm, etc.)

1- rd/wt- power to lamps?- H4- rd/wt- fused bat A mem circuit- correct

2- db/rd- tail/lic/side - G7- or/vt- door B+ switch- B7

3- NO CONNECTION

4- vt/wt- fuel use trip- G5- db/rd- rf spkr ret. - B5

5- bl/og- chassis ground- G3- db/lb- mirror ret.- Grnd

6- lg/bk- eng/met switch- G1- yl/lg- rt mirror up/dn- B1

7- yl/dg- fused ing.- H10- yl/dg- fused ign conv. Items- correct

8- yl- ground- H3- yl- switched ground- correct

9- dg/rd- amb.temp. signal- separate 2-place connector- B11

10- lg/wt- amb.temp. return- separate 2-place connector- B10

11- wt/bk- serial bus B-- G9- rd/wt- fused batt A mem circuit- B9

12- vt/br- serial bus B+- G8- pk/vt- dr lock B+ unlock- B8

13- or- illum- G6- vt- rf spkr feed- B6

2drezq
05-13-2005, 03:18 PM
Warning! The section of the FSM that deals specifically with the OHC numbers the connector differently than the wiring schematic. Be CAREFUL. Also, Item # 6 (Eng/Met wire) is listed supposed to go to connector B1, but if there Jeep doesn't have a VIC or electronic odometer, then there is no connection there to hook to.

Mine is in and workng now, except for the DTE readout which shows an open circuit. I'll figure that out later.

Dperra
07-01-2006, 10:19 PM
How much information do you have about the overhead console TC? My 1995 ZJ came with the TC. It sill works however, after I completed the stroker upgrade the TC reports fuel mileage about 3 MPG high. (Reports 18 MPG when calculated fill up mileage is 15 MPG.) The Odometer function still reports the correct distance compared against the odometer in the instrument cluster. I suspect that the reason for the inaccuracy is the high flow injectors installed with the Stroker upgrade. The fuel use is reported incorrectly because the injectors flow more fuel in a shorter burst. The TC must calculate fuel use by how long the injectors are open. Is there some way to adjust or reprogram the Trip Computer to correct this?

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