Rev Counter Not Working

[ROSCO]

Hello all,Ive just managed to get myself a 2.3 cosworth but the rev counter doesn"t work and everytime i replace the fuse it lasts around 10mins and then blows it!Can anyone help me with what the problem may be and were i can get the part to fix it??

many thanks Ross.

 

[pascal]

You will need to find out what other items are on this fuse, from the fuse alocation card.

On 124s the bulb monitorin unit & cruise is on the same circuit. So is the trailer control, the front dome and stop lamp.

If it turns out that the stop lanp is the culprit, it may only blow when you use the brakes (ie it will not blow immediatly). I would check both holders first and maybe remove one bulb, and then the other (replacing first). If it still blows the fuse, then I would look at the brake light switch.