the best diagrams are in the Haynes Repair Manuals for Volvo---it is a complicated wiring system, but the haynes books are good , they go by year and model changes and you CAN actually follow them.....just remember that the colour cobes are still in the original Swedish ,but Haynes gives a colour code translation. good luck WG Syd Australia
Where is starter relay on a 1986 volvo 240gl
My Chilton Manual Volvo 1970 - 1989 has a detailed explanation of what the VIN number means on p.6
Depends on the engine and ECU you have in it
4 cylinder petrol 1.3.4.2 6 cylinder diesel 1.5.3.6.2.4 In both cases no 1 cylinder is nearest the front of the vehicle.
Without year of vehicle, its hard to say exactly. In general: Purchase the correct replacement bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information. Then consult your owner's manual for the replacement procedure. The owner's manual is the best place to start for bulb replacement. You may want to consider replacing both left and right at the same time in order to keep brightness and color equal (optional).