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Old 05-16-2006, 07:40 PM
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Steering Column Wiring

I am putting a 1990 S10 tilt steering column into a Model A and using an aftermarket wiring harness. I found that the wiper power wire coming from the fuse box is hot only when the key is on. However, the wiper switch on the column does not work, the wiper power is always on. So, I suppose you have to run that wiper power wire to the column and then from the column switch to the wiper. What wires do I connect to on the steering column. Help?

Do you have a wiring schematic for a 1990 S10 steering column? Thanks.

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Old 05-16-2006, 09:52 PM
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Doc here,

What wiper system are you using?

The standard Old style GM wipers were ground controlled, Power was run to the motor direct and ground was provided through the switch for on, low and high speeds..

The 90 GM looks as if there is a Speed / Delay module involved between the switch and the motor, and on my schematic at least, does not show if it ground switched or powerswitched..The module receives power from the fuse panel and three wires go to the switch from the module , and the motor comes out from there..The only ground shown is at the motor..

Are you using the 90 GM wiper and Speed / delay module?

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Old 05-16-2006, 10:04 PM
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Wiper Motor

The wiper motor is a universal, single speed unit. The power will go directly to the wiper motor with no delay unit.

Larry

Last edited by loiselle; 05-16-2006 at 10:06 PM. Reason: Added Info
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Old 05-16-2006, 10:08 PM
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Doc here,

Do you have the wiper installation instructions? and do they show the wiper motor wired direct to fused power?

If so, It's ground switched..

Take a look and let me know.

You did edit just as I posted!

All you need to do is insure that one side of the wiper switch is grounded, and the other is run to the wiper motor "On" terminal..

You should be good to go!

Doc
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Last edited by docvette; 05-16-2006 at 10:10 PM. Reason: Faster then me on edits!
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