AboutRoger Patricio Expertise Can answer all Volvo car questions. European and Canada spec cars are different but I can try to help you.
Experience I am a Certified Volvo Tech at in Independent Volvo Repair shop. I grew up around Volvos and decided I wanted to do it professionally. I worked at the dealer for about a year then I went to work at an Independent shop which I have been with for 10 years.
Expert: Roger Patricio Date: 8/24/2008 Subject: 1990 Volvo 240 Speedo/odometer
Question I pulled the instrument cluster today, because my odometer didn't work. After I replaced the 25-tooth odometer gear, the odometer still didn't work. Then I saw a loose red and white wire and, thinking that I had left it off, connected it to the two-prong male fitting on the back of the cluster that had the yellow wire connected to it. When I turned the key on, the speedo needle buried itself and it no longer works.
I don't have a tachometer on this car. I also don't have a wiring diagram for the instrument cluster or speedometer--my Haynes only goes up to 1986.
The question is, did I fry the speedometer head? Can you tell me where I can get the wiring diagram I need?
Thanks very much,
Jake Manning
Answer Jake, in a word, Yes, you cooked it. That white red is the tach wire. You can thorow that haynes away. Its toilet paper. If you are interested, I make custom instrument clusters and Im sure I have a 90 around here somewhere. You seemed to have hooked up everything correctly. Mark the red/white as tach so you dont blow it again. Send me your Email and I will send you some samples of what I do. Roger
