CPU water leak recall, horn, turn signals, warning system

[rx4ur7]

I would think this is old news. I thought I saw a post that was relating to this issue.
RECALL #031/86 10/3/86
CPU Damage from Water Leak

Some early RX7's have had CPU damage caused by water leakage. Symptoms include:

erratic or no horn
erratic turn signal and emergency light operation
erratic or no 'beep' warning signals


Leakage occurs around a metal flange (upper left inner body under left fender)
Fix from Mazda:more sealant applied to area during production and protective coating added to inside of CPU.
Field fix; sealant applied to area, replace CPU if damaged beyond cleaning.


I have had to repair a few of these, I would think they have all been taken care of by now. Need to check CPU and fuse block for water damage also.

[SecondGenPat]

Is this area by the drivers door jamb where the door hinges mount? That's the only body rust spot I have and I am also experiencing the same issues.
Thanks

[rx4ur7]

Yes, up and forward of the top hinge. On the guys I did you could see where it was by using a light from the outside then looking up inside.
Page 105 Service Bulletin 1986 book. 9999-95-008N-87