Ma défaillance du vélocimètre Ford F150 et mon feu inversé

That I asked me if they could help me what happens is that I have a Ford F150 V6 1997 American and a
half The foci that could be fuses or that
and a doubt for those who have a Ford on the refaction tire are two black boxes with hoses are new so that they serve and with two separate boxes I hope you can help me thanks is that I have no manual of owner of owner