hello all in need of some advice...
i just installed a new relay and 5 new plugs, around 4 months ago.
running great til today. i turn the key to wait for glow plug light and it never went solid just keeps flashing??? the strip fuse is new?? any advice will help thanks...

 

No answers yet.

The below assumes you have the Pencil type Glow Plugs not the Loop/Filiment types.
Where the Glow Plugs you replaced Bosch are Beru Glow Plugs. If not it could already be the Glow Plugs.

Also when you removed the Glow Plugs did you Ream (there is a Glow Plug Reaming Tool mad for that) the Carbon out or us an alternative method to clean out the Carbon?

In any event you should go through the Glow plug Trouble Shooting Proceedure. Go to the Diesel Giant web site where he has a how to pictorial (this is not a recommendation to buy parts from him).
For the above if you do not have one you can get an inexpensive digital electrical meter from Harbor Freight for $5 or less when it is on sale.

If you want to see what a Glow Plug Reamer looks like do a search on eBay.