Hi Mr. Burco,

Glad to halps! I may be a little confused here.

Dave Barton's site has a diagram of the back of the 1990 240 instrument cluster here (copy and paste into new open browser tab or window):

https://www.240turbo.com/240gaugewiring.html

Read Dave's page yet here is the image:


Withe gratitude to Mr. Barton.

You do not want to connect the ignition coil (RPM) to the speedometer signal out as some do. The ignition coil signal spade is red / white stripe and that goes to the RPM sensor. There may be posts here where some have confused the ignition could wire and connected it to the two spade vehicle speedo sensor.

I was worried I got wire color confused.

The speedometer signal out is the dual blade copper alloy connector that has the section of rubber hose from the factory. The Volvo speed sensor in the rear differential signal comes to the speedometer connector through that funny T-shaped connector where we've probably all lost the white plastic retainer clip. Our beloved Art has a page on his cleanflametrap.com site that helps as the connector can be fussy with age:

https://cleanflametrap.com/speedoDiag.html

The last image of one of the speedo connector wire clips you gently squeeze for a good connection.

Hope this helps with the turn signal issue also.

A belated god jul (Happy Christmas or Happy Yule) and a Happier New Year!!!!

Hope that helps

Eggnog no moar so back to buttermilk, boyeeeeeee!!!


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