- Joined
- Aug 14, 2007
- Messages
- 7,897
- Reaction score
- 982
- Points
- 113
- Location
- UT
- Vehicle Year
- 1989
- Make / Model
- Ford
- Engine Type
- 4.0 V6
- Transmission
- Manual
- 2WD / 4WD
- 4WD
- Total Lift
- 5
- Tire Size
- 33
Did you ever figure this out?Steering wheel on-off switch does nothing on the ohm meter when the on button is pressed. So I get out the volt meter (next step in the service manual) It calls for approximately 7.8V at the switch with the key on, I have 7.7 so I think I am good there. When the on button is pressed it should go to 12v when the cruise is armed... and mine does nothing. So I think I need a switch, so that is on ice for awhile until one turns up in a yard.
I actually ran into the same problem on my cruise control install earlier today. Your truck may not be the same, but I wasn't getting 12v at the amplifier when pressing 'On' either, but I was getting 7.8. Turns out the power for that comes from the horn relay, it's a yellow and green wire. The yellow and blue supplies power to the relay and the dark blue one powers the horn itself.
If yours is different then.... Idk.
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