Cruise control
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Amateur
Joined: Jul 2017
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Switches are on the steering wheel. Don't think you can add them, have to find a steering wheel that has 'em. Clock spring is shortly behind the steering wheel. it's what allows the electrical controls in the steering wheel, (horn, cruise control....) to get their signals down to the part of the column that doesn't move. Brake switch is down on the bracket for the brake pedal. 
I got all that figured out and I' sure I can get it all together but what about the PCM? What and where r the plugs I need for it? Thanks
Legend
Joined: Jun 2009
Posts: 8,025
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From: orangeville ontario
the rest of the parts should be easily acquired off a parts truck in the junk yard. you can get stuff like a clock spring new but always cost more money. best to just take the whole steering wheel and clock spring to make things simple. also once you pull the clock spring do not spin it at all. you can damage it if you do. under the hood you just need the. servo, throttle cable, vacuum lines and vacuum reservoir. best to try getting as much of the vacuum line as you can with the servo and vacuum reservoir just so you make sure to get the check valve for the vacuum reservoir. the vacuum reservoir keeps the cruise working good even when it don't have good vacuum. should all be plug and play tho
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Amateur
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after looking things up it looks like all the newer trucks use the same brake light switch so 1 less to worry about swapping out.
the rest of the parts should be easily acquired off a parts truck in the junk yard. you can get stuff like a clock spring new but always cost more money. best to just take the whole steering wheel and clock spring to make things simple. also once you pull the clock spring do not spin it at all. you can damage it if you do. under the hood you just need the. servo, throttle cable, vacuum lines and vacuum reservoir. best to try getting as much of the vacuum line as you can with the servo and vacuum reservoir just so you make sure to get the check valve for the vacuum reservoir. the vacuum reservoir keeps the cruise working good even when it don't have good vacuum. should all be plug and play tho
the rest of the parts should be easily acquired off a parts truck in the junk yard. you can get stuff like a clock spring new but always cost more money. best to just take the whole steering wheel and clock spring to make things simple. also once you pull the clock spring do not spin it at all. you can damage it if you do. under the hood you just need the. servo, throttle cable, vacuum lines and vacuum reservoir. best to try getting as much of the vacuum line as you can with the servo and vacuum reservoir just so you make sure to get the check valve for the vacuum reservoir. the vacuum reservoir keeps the cruise working good even when it don't have good vacuum. should all be plug and play tho
where does the reservoir go?
Legend
Joined: Nov 2014
Posts: 8,098
Likes: 318
Be warned these trucks had to small of a vacuum reservoir, and are know to have the "wild vents" issue along with loosing cruise speed when vacuum is low. Myself I have tried to fix this issue for 2 years, I've replaced all vacuum lines and check valves even put in a bigger reservoir. Now I finally got it fixed. What I did was installed a vacuum pump and got rid of the vacuum cruise control servo and installed an electric one so it takes one less thing off the vacuum system. Should be all plug and play. Up until 2008.5 Chrysler used one harness throughout the trucks. So even if you didn't have a certain option the plug was there. Good luck and I have a parts truck if you need any parts.
Thread Starter
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Amateur
Joined: Jul 2017
Posts: 40
Likes: 0
Be warned these trucks had to small of a vacuum reservoir, and are know to have the "wild vents" issue along with loosing cruise speed when vacuum is low. Myself I have tried to fix this issue for 2 years, I've replaced all vacuum lines and check valves even put in a bigger reservoir. Now I finally got it fixed. What I did was installed a vacuum pump and got rid of the vacuum cruise control servo and installed an electric one so it takes one less thing off the vacuum system. Should be all plug and play. Up until 2008.5 Chrysler used one harness throughout the trucks. So even if you didn't have a certain option the plug was there. Good luck and I have a parts truck if you need any parts.
so what ur saying is I should install a Vaccum pump where and what kind? And an electric servo instead of a Vaccum fed one?
Legend
Joined: Nov 2014
Posts: 8,098
Likes: 318
It varies by truck honestly. Some are fine but most aren't. Installing a vacuum pump will be good enough, I just went to an electric servo to see if it helped. Where I installed mine was right after it came out of the manifold I bought a T fitting and ran a hose with a check valve down to the pump. When the vacuum hit 14PSI the pump kicked on. Any pump (I got mine from eBay for $12) that can be switched to come on at a certain PSI is fine.
Legend
Joined: Jun 2009
Posts: 8,025
Likes: 72
From: orangeville ontario
It varies by truck honestly. Some are fine but most aren't. Installing a vacuum pump will be good enough, I just went to an electric servo to see if it helped. Where I installed mine was right after it came out of the manifold I bought a T fitting and ran a hose with a check valve down to the pump. When the vacuum hit 14PSI the pump kicked on. Any pump (I got mine from eBay for $12) that can be switched to come on at a certain PSI is fine.