My 95 Civic's horn is kind of weak and I'm looking to add a second horn
like the Si. Has anyone else on the forum had any luck doing this? There
is a mounting hole on the drivers side that can be reached without removing
the bumper. I'm not sure if the existing wireing and relay will handle an
additional horn? Thanks in advance.

 

Adding an additional horn in parallel with the original shouldn't be a
problem with the relay... and you're right... the horn in that car is
really feeble. That's where they always make a "cost reduction" on
almost all vehicles in that price range.

Professor
Check out FlashAlert at www.telstar-electronics.com

 

Thanks Professor, It's a fairly easy job and I now have two working horns.
I pulled the original horn down through the bottom of the bumper on the
pass side after using a 1/4 drive rachet. Then disconected the connector
and skimmed about 1/2 inch of insulation off the blue/red wire and sodered
a wire to it that was going going to the second horn. The original horn
wire will pull down a enough with some coaxing. Wrap with electrical
tape. I purchased a horn with connector at a salvage yard. The other wire
from the new horn was connected to ground and the job is done. Remember to
disconnect the battery before doing this job.