# 1970 Cadillac DeVille - Speedo and cruise

**URL:** <https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440>\
**Category:** Maintenance/Repairs\
**Tags:** cadillac\
**Created:** [October 9, 2018, 1:22pm UTC](https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440 "2018-10-09T13:22:38Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Terrencewatson](https://avatars.discourse-cdn.com/v4/letter/t/d2c977/32.png) [@Terrencewatson](https://community.cartalk.com/u/Terrencewatson)\
**Post date:** [October 9, 2018, 1:22pm UTC](https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440/1 "2018-10-09T13:22:38Z")

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I have a 1970 cadi convertible my speedometer cable is off I’m wondering will it work without the cruise control canle

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [October 9, 2018, 2:32pm UTC](https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440/2 "2018-10-09T14:32:33Z")

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Why not just have the speedometer cable replaced , that could keep you from getting a very expensive ticket in a school zone.

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**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\
**Post date:** [October 10, 2018, 12:46am UTC](https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440/3 "2018-10-10T00:46:23Z")

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Which speedo cable are you talking about? The lower cable runs from the transmission to the cruise control servo on the left fender well. The upper speedo cable runs from the cruise servo through the firewall to the speedometer.

If the lower cable is broken, the cause is often that the cruise servo has seized.

You can bypass the cruise servo and run one cable from the trans to the speedo.

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**Author:** ![Terrencewatson](https://avatars.discourse-cdn.com/v4/letter/t/d2c977/32.png) [@Terrencewatson](https://community.cartalk.com/u/Terrencewatson)\
**Post date:** [October 10, 2018, 2:34am UTC](https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440/4 "2018-10-10T02:34:04Z")

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My lower cable is the one Thts broken the cruise cable is not there so if I put a new lower cable my speedometer will start working

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**Author:** ![asemaster](https://avatars.discourse-cdn.com/v4/letter/a/5f9b8f/32.png) [@asemaster](https://community.cartalk.com/u/asemaster)\
**Post date:** [October 10, 2018, 3:52am UTC](https://community.cartalk.com/t/1970-cadillac-deville-speedo-and-cruise/126440/5 "2018-10-10T03:52:32Z")

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What do you mean the cruise cable is not there? There are 2 cables and they both connect to the cruise. One from the transmission to the cruise and one from the cruise to the speedometer.

If the lower cable is broken at the end that connects to the cruise then there’s a chance the cruise servo is broken too.